789674008: Spastic paraplegia, optic atrophy, neuropathy and spastic paraplegia, optic atrophy neuropathy-related disorder (disorder)

SNOMED CT Concept\Clinical finding (finding)\...

\Finding of back (finding)\Finding of spinal region\Disorder of spinal region (disorder)\Spinal cord disorder (disorder)\Chronic disorder of spinal cord (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of back (finding)\Finding of spinal region\Disorder of spinal region (disorder)\Spinal cord disorder (disorder)\Chronic disorder of spinal cord (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of back (finding)\Finding of spinal region\Finding of spinal cord\Spinal cord disorder (disorder)\Chronic disorder of spinal cord (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of back (finding)\Finding of spinal region\Finding of spinal cord\Spinal cord disorder (disorder)\Chronic disorder of spinal cord (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of back (finding)\Disorder of back including back of neck.\Disorder of spinal region (disorder)\Spinal cord disorder (disorder)\Chronic disorder of spinal cord (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of back (finding)\Disorder of back including back of neck.\Disorder of spinal region (disorder)\Spinal cord disorder (disorder)\Chronic disorder of spinal cord (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.

\Finding of limb structure\Disorder of limb (disorder)\Disorder of lower limb\Disorder of left lower extremity (disorder)\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of limb structure\Disorder of limb (disorder)\Disorder of lower limb\Disorder of left lower extremity (disorder)\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of limb structure\Disorder of limb (disorder)\Disorder of lower limb\Disorder of left lower extremity (disorder)\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of limb structure\Disorder of limb (disorder)\Disorder of lower limb\Disorder of left lower extremity (disorder)\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of limb structure\Disorder of limb (disorder)\Disorder of lower limb\Disorder of right lower extremity (disorder)\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of limb structure\Disorder of limb (disorder)\Disorder of lower limb\Disorder of right lower extremity (disorder)\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of limb structure\Disorder of limb (disorder)\Disorder of lower limb\Disorder of right lower extremity (disorder)\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of limb structure\Disorder of limb (disorder)\Disorder of lower limb\Disorder of right lower extremity (disorder)\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of limb structure\Finding of lower limb\Disorder of lower limb\Disorder of left lower extremity (disorder)\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of limb structure\Finding of lower limb\Disorder of lower limb\Disorder of left lower extremity (disorder)\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of limb structure\Finding of lower limb\Disorder of lower limb\Disorder of left lower extremity (disorder)\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of limb structure\Finding of lower limb\Disorder of lower limb\Disorder of left lower extremity (disorder)\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of limb structure\Finding of lower limb\Disorder of lower limb\Disorder of right lower extremity (disorder)\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of limb structure\Finding of lower limb\Disorder of lower limb\Disorder of right lower extremity (disorder)\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of limb structure\Finding of lower limb\Disorder of lower limb\Disorder of right lower extremity (disorder)\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of limb structure\Finding of lower limb\Disorder of lower limb\Disorder of right lower extremity (disorder)\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.

\Finding of movement\Movement disorder\Nerve palsy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of movement\Movement disorder\Paralytic syndrome\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of movement\Movement disorder\Paralytic syndrome\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of movement\Movement disorder\Paralytic syndrome\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of movement\Movement disorder\Paralytic syndrome\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of movement\Movement disorder\Paralytic syndrome\Complete bilateral paralysis\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of movement\Movement disorder\Paralytic syndrome\Complete bilateral paralysis\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of movement\Movement disorder\Paralytic syndrome\Complete bilateral paralysis\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of movement\Movement disorder\Paralytic syndrome\Complete bilateral paralysis\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of movement\Motor dysfunction\Paralysis\Paralytic syndrome\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of movement\Motor dysfunction\Paralysis\Paralytic syndrome\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of movement\Motor dysfunction\Paralysis\Paralytic syndrome\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of movement\Motor dysfunction\Paralysis\Paralytic syndrome\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of movement\Motor dysfunction\Paralysis\Paralytic syndrome\Complete bilateral paralysis\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of movement\Motor dysfunction\Paralysis\Paralytic syndrome\Complete bilateral paralysis\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of movement\Motor dysfunction\Paralysis\Paralytic syndrome\Complete bilateral paralysis\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Finding of movement\Motor dysfunction\Paralysis\Paralytic syndrome\Complete bilateral paralysis\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.

\Central nervous system finding\Finding of spinal cord\Spinal cord disorder (disorder)\Chronic disorder of spinal cord (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Central nervous system finding\Finding of spinal cord\Spinal cord disorder (disorder)\Chronic disorder of spinal cord (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Central nervous system finding\Second cranial nerve finding (finding)\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Central nervous system finding\Disorder of the central nervous system (disorder)\Spastic syndrome (disorder)\Spastic paraplegia\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Central nervous system finding\Disorder of the central nervous system (disorder)\Spastic syndrome (disorder)\Spastic paraplegia\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Central nervous system finding\Disorder of the central nervous system (disorder)\Degenerative disease of the central nervous system\Hereditary degenerative disease of central nervous system\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Central nervous system finding\Disorder of the central nervous system (disorder)\Degenerative disease of the central nervous system\Hereditary degenerative disease of central nervous system\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Central nervous system finding\Disorder of the central nervous system (disorder)\Degenerative disease of the central nervous system\Hereditary degenerative disease of central nervous system\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Central nervous system finding\Disorder of the central nervous system (disorder)\Degenerative disease of the central nervous system\Optic atrophy\Primary optic atrophy\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Central nervous system finding\Disorder of the central nervous system (disorder)\Disorder of visual pathways\Disorder of optic nerve\Inherited optic neuropathy\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Central nervous system finding\Disorder of the central nervous system (disorder)\Disorder of visual pathways\Disorder of optic nerve\Optic atrophy\Primary optic atrophy\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Central nervous system finding\Disorder of the central nervous system (disorder)\Spinal cord disorder (disorder)\Chronic disorder of spinal cord (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Central nervous system finding\Disorder of the central nervous system (disorder)\Spinal cord disorder (disorder)\Chronic disorder of spinal cord (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.

\Eye / vision finding\Visual system disorder (disorder)\Hereditary disorder of the visual system\Inherited optic neuropathy\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Eye / vision finding\Visual system disorder (disorder)\Disorder of visual pathways\Disorder of optic nerve\Inherited optic neuropathy\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Eye / vision finding\Visual system disorder (disorder)\Disorder of visual pathways\Disorder of optic nerve\Optic atrophy\Primary optic atrophy\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Eye / vision finding\Second cranial nerve finding (finding)\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.

\Neurological finding\Cranial nerve finding\Second cranial nerve finding (finding)\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Neurological finding\Motor nervous system finding\Motor dysfunction\Paralysis\Paralytic syndrome\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Neurological finding\Motor nervous system finding\Motor dysfunction\Paralysis\Paralytic syndrome\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Neurological finding\Motor nervous system finding\Motor dysfunction\Paralysis\Paralytic syndrome\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Neurological finding\Motor nervous system finding\Motor dysfunction\Paralysis\Paralytic syndrome\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Neurological finding\Motor nervous system finding\Motor dysfunction\Paralysis\Paralytic syndrome\Complete bilateral paralysis\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Neurological finding\Motor nervous system finding\Motor dysfunction\Paralysis\Paralytic syndrome\Complete bilateral paralysis\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Neurological finding\Motor nervous system finding\Motor dysfunction\Paralysis\Paralytic syndrome\Complete bilateral paralysis\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Neurological finding\Motor nervous system finding\Motor dysfunction\Paralysis\Paralytic syndrome\Complete bilateral paralysis\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.

\Disease\Genetic disease\Hereditary disease\Hereditary disorder by system\Hereditary disorder of the visual system\Inherited optic neuropathy\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Genetic disease\Hereditary disease\Hereditary disorder by system\Hereditary disorder of nervous system\Inherited optic neuropathy\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Genetic disease\Hereditary disease\Hereditary disorder by system\Hereditary disorder of nervous system\Hereditary degenerative disease of central nervous system\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Genetic disease\Hereditary disease\Hereditary disorder by system\Hereditary disorder of nervous system\Hereditary degenerative disease of central nervous system\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Genetic disease\Hereditary disease\Hereditary disorder by system\Hereditary disorder of nervous system\Hereditary degenerative disease of central nervous system\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Genetic disease\Hereditary disease\Autosomal hereditary disorder\Autosomal recessive hereditary disorder\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Degenerative disorder\Degenerative disease of the central nervous system\Hereditary degenerative disease of central nervous system\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Degenerative disorder\Degenerative disease of the central nervous system\Hereditary degenerative disease of central nervous system\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Degenerative disorder\Degenerative disease of the central nervous system\Hereditary degenerative disease of central nervous system\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Degenerative disorder\Degenerative disease of the central nervous system\Optic atrophy\Primary optic atrophy\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Hereditary disorder by system\Hereditary disorder of the visual system\Inherited optic neuropathy\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Hereditary disorder by system\Hereditary disorder of nervous system\Inherited optic neuropathy\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Hereditary disorder by system\Hereditary disorder of nervous system\Hereditary degenerative disease of central nervous system\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Hereditary disorder by system\Hereditary disorder of nervous system\Hereditary degenerative disease of central nervous system\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Hereditary disorder by system\Hereditary disorder of nervous system\Hereditary degenerative disease of central nervous system\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Visual system disorder (disorder)\Hereditary disorder of the visual system\Inherited optic neuropathy\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Visual system disorder (disorder)\Disorder of visual pathways\Disorder of optic nerve\Inherited optic neuropathy\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Visual system disorder (disorder)\Disorder of visual pathways\Disorder of optic nerve\Optic atrophy\Primary optic atrophy\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Neuropathy (disorder)\Nerve palsy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Neuropathy (disorder)\Cranial nerve disorder\Disorder of optic nerve\Inherited optic neuropathy\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Neuropathy (disorder)\Cranial nerve disorder\Disorder of optic nerve\Optic atrophy\Primary optic atrophy\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Hereditary disorder of nervous system\Inherited optic neuropathy\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Hereditary disorder of nervous system\Hereditary degenerative disease of central nervous system\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Hereditary disorder of nervous system\Hereditary degenerative disease of central nervous system\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Hereditary disorder of nervous system\Hereditary degenerative disease of central nervous system\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Chronic nervous system disorder\Chronic disorder of spinal cord (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Chronic nervous system disorder\Chronic disorder of spinal cord (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Chronic nervous system disorder\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Chronic nervous system disorder\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Complete bilateral paralysis\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Complete bilateral paralysis\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Complete bilateral paralysis\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Complete bilateral paralysis\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Disorder of the central nervous system (disorder)\Spastic syndrome (disorder)\Spastic paraplegia\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Disorder of the central nervous system (disorder)\Spastic syndrome (disorder)\Spastic paraplegia\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Disorder of the central nervous system (disorder)\Degenerative disease of the central nervous system\Hereditary degenerative disease of central nervous system\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Disorder of the central nervous system (disorder)\Degenerative disease of the central nervous system\Hereditary degenerative disease of central nervous system\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Disorder of the central nervous system (disorder)\Degenerative disease of the central nervous system\Hereditary degenerative disease of central nervous system\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Disorder of the central nervous system (disorder)\Degenerative disease of the central nervous system\Optic atrophy\Primary optic atrophy\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Disorder of the central nervous system (disorder)\Disorder of visual pathways\Disorder of optic nerve\Inherited optic neuropathy\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Disorder of the central nervous system (disorder)\Disorder of visual pathways\Disorder of optic nerve\Optic atrophy\Primary optic atrophy\Hereditary optic atrophy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Disorder of the central nervous system (disorder)\Spinal cord disorder (disorder)\Chronic disorder of spinal cord (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of body system\Disorder of nervous system (disorder)\Disorder of the central nervous system (disorder)\Spinal cord disorder (disorder)\Chronic disorder of spinal cord (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of limb (disorder)\Disorder of lower limb\Disorder of left lower extremity (disorder)\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of limb (disorder)\Disorder of lower limb\Disorder of left lower extremity (disorder)\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of limb (disorder)\Disorder of lower limb\Disorder of left lower extremity (disorder)\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of limb (disorder)\Disorder of lower limb\Disorder of left lower extremity (disorder)\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of limb (disorder)\Disorder of lower limb\Disorder of right lower extremity (disorder)\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of limb (disorder)\Disorder of lower limb\Disorder of right lower extremity (disorder)\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of limb (disorder)\Disorder of lower limb\Disorder of right lower extremity (disorder)\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of limb (disorder)\Disorder of lower limb\Disorder of right lower extremity (disorder)\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Movement disorder\Nerve palsy\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Movement disorder\Paralytic syndrome\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Movement disorder\Paralytic syndrome\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Movement disorder\Paralytic syndrome\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Movement disorder\Paralytic syndrome\Paralytic syndrome of bilateral lower limbs (disorder)\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Movement disorder\Paralytic syndrome\Complete bilateral paralysis\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Movement disorder\Paralytic syndrome\Complete bilateral paralysis\Paraplegia\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Movement disorder\Paralytic syndrome\Complete bilateral paralysis\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Movement disorder\Paralytic syndrome\Complete bilateral paralysis\Paraplegia\Spastic paraplegia\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of back including back of neck.\Disorder of spinal region (disorder)\Spinal cord disorder (disorder)\Chronic disorder of spinal cord (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Disorder of back including back of neck.\Disorder of spinal region (disorder)\Spinal cord disorder (disorder)\Chronic disorder of spinal cord (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Chronic disease\Chronic nervous system disorder\Chronic disorder of spinal cord (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Chronic disease\Chronic nervous system disorder\Chronic disorder of spinal cord (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Chronic disease\Chronic nervous system disorder\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Autosomal recessive hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.
\Disease\Chronic disease\Chronic nervous system disorder\Chronic paraplegia (disorder)\Hereditary spastic paraplegia\Complicated hereditary spastic paraplegia\A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.

Status: current, Not sufficiently defined by necessary conditions definition status (core metadata concept). Date: 31-Jan 2020. Module: SNOMED CT core

Descriptions:

Id Description Lang Type Status Case? Module

5408812014 A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed. en Definition Active Entire term case sensitive (core metadata concept) SNOMED CT core

5408813016 A group of rare, genetic, neurodegenerative diseases characterised by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed. en Definition Active Entire term case sensitive (core metadata concept) SNOMED CT core

3791513010 SPOAN and SPOAN-related disorder en Synonym (core metadata concept) Active Entire term case sensitive (core metadata concept) SNOMED CT core

3791514016 Spastic paraplegia, optic atrophy, neuropathy and spastic paraplegia, optic atrophy neuropathy-related disorder en Synonym (core metadata concept) Active Entire term case insensitive (core metadata concept) SNOMED CT core

3791515015 Spastic paraplegia, optic atrophy, neuropathy and spastic paraplegia, optic atrophy neuropathy-related disorder (disorder) en Fully specified name Active Entire term case insensitive (core metadata concept) SNOMED CT core

7672461000241113 syndromes apparentés au syndrome SPOAN (spastic paraplegia, optic atrophy, neuropathy) fr Synonym (core metadata concept) Active Only initial character case insensitive (core metadata concept) SNOMED CT Switzerland NRC maintained Module

7672471000241117 syndromes apparentés au syndrome de paraplégie spastique, atrophie optique, neuropathie fr Synonym (core metadata concept) Active Entire term case insensitive (core metadata concept) SNOMED CT Switzerland NRC maintained Module

588461000274110 SPOAN und SPOAN-verwandte Krankheiten de Synonym (core metadata concept) Active Entire term case sensitive (core metadata concept) SNOMED CT Switzerland NRC maintained Module

3394171001000116 Spastische Paraplegie-Optikusatrophie-Neuropathie und verwandte Krankheiten de Synonym (core metadata concept) Active Entire term case sensitive (core metadata concept) SNOMED CT Switzerland NRC maintained Module

Expanded Value Set

Outbound Relationships	Type	Target	Active	Characteristic	Refinability	Group	Values
A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Occurrence	Congenital	false	Inferred relationship	Some	3
A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Finding site	Spinal cord structure	true	Inferred relationship	Some	1
A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Finding site	Optic nerve structure	true	Inferred relationship	Some	2
A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Occurrence	Congenital	false	Inferred relationship	Some	1
A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Occurrence	Congenital	false	Inferred relationship	Some	2
A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Associated morphology	Primary atrophy (morphologic abnormality)	true	Inferred relationship	Some	2
A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Is a	Autosomal recessive hereditary disorder	false	Inferred relationship	Some
A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Is a	Hereditary optic atrophy	true	Inferred relationship	Some
A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Associated morphology	Degenerative abnormality	true	Inferred relationship	Some	1
A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Clinical course	Progressive	true	Inferred relationship	Some	4
A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Is a	Chronic paraplegia (disorder)	false	Inferred relationship	Some
A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Finding site	Body structure that includes the hip, thigh, leg, ankle and foot.	false	Inferred relationship	Some	3
A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Is a	Complicated hereditary spastic paraplegia	true	Inferred relationship	Some
A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Is a	Congenital atrophy of optic nerve (disorder)	false	Inferred relationship	Some
A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Is a	Autosomal recessive hereditary spastic paraplegia	true	Inferred relationship	Some
A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Is a	Second cranial nerve finding (finding)	true	Inferred relationship	Some
A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Interprets	mouvement	false	Inferred relationship	Some	7
A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Finding site	Structure of right lower limb (body structure)	true	Inferred relationship	Some	3
A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Finding site	Structure of left lower limb (body structure)	true	Inferred relationship	Some	6
A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Interprets	Movement observable	true	Inferred relationship	Some	5
A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Has interpretation	Absent	true	Inferred relationship	Some	5
A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Is a	Nerve palsy	true	Inferred relationship	Some

Inbound Relationships	Type	Active	Source	Characteristic	Refinability	Group
Autosomal recessive spastic paraplegia type 55 (SPG 55) is a rare, complex type of hereditary spastic paraplegia characterized by childhood onset of progressive spastic paraplegia associated with optic atrophy (with reduced visual acuity and central scotoma), ophthalmoplegia, reduced upper-extremity strength and dexterity, muscular atrophy in the lower extremities, and sensorimotor neuropathy. SPG55 is caused by mutations in the C12ORF65 gene (12q24.31) encoding probable peptide chain release factor C12orf65, mitochondrial.	Is a	True	A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Inferred relationship	Some
Autosomal recessive spastic paraplegia type 57 (SPG57) is an extremely rare, complex type of hereditary spastic paraplegia, characterized by onset in infancy of pronounced leg spasticity (leading to the inability to walk independently), reduced visual acuity due to optic atrophy, and distal wasting of the hands and feet due to an axonal demyelinating sensorimotor neuropathy. SPG57 is caused by mutations in the TFG gene (3q12.2) encoding protein TFG, which is thought to play a role in ER microtubular architecture and function.	Is a	True	A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Inferred relationship	Some
A rare, complex type of hereditary spastic paraplegia characterized by early-onset progressive spastic paraplegia presenting in infancy, associated with optic atrophy, fixation nystagmus, polyneuropathy occurring in late childhood/early adolescence leading to severe motor disability and progressive joint contractures and scoliosis.	Is a	True	A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Inferred relationship	Some
Autosomal recessive spastic paraplegia type 74 is a rare, genetic, spastic paraplegia-optic atrophy-neuropathy-related (SPOAN-like) disorder characterized by childhood onset of mild to moderate spastic paraparesis which manifests with gait impairment that very slowly progresses into late adulthood, hyperactive patellar reflex and bilateral extensor plantar response, in association with optic atrophy and typical symptoms of peripheral neuropathy, including reduced or absent ankle reflexes, lower limb atrophy and distal sensory impairment. Reduced visual acuity and pes cavus are frequently reported.	Is a	True	A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	Inferred relationship	Some

Reference Sets

Component annotation with string value reference set (foundation metadata concept)

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Id	Description	Lang	Type	Status	Case?	Module
5408812014	A group of rare, genetic, neurodegenerative diseases characterized by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	en	Definition	Active	Entire term case sensitive (core metadata concept)	SNOMED CT core
5408813016	A group of rare, genetic, neurodegenerative diseases characterised by an infancy- to childhood-onset of progressive spastic paraplegia (with delayed motor milestones, gait disturbances, hyperreflexia and extensor plantar responses), optic atrophy (which may be accompanied by nystagmus and visual loss) and progressive peripheral neuropathy (with sensory impairment and distal muscle weakness/atrophy in upper and lower extremities). Additional signs may include foot deformities, spinal defects (scoliosis, kyphosis), joint contractures, exaggerated startle response, speech disorders, hyperhidrosis, extrapyramidal signs and intellectual disability. In very rare cases, a variant phenotype with less prominent or absent optic atrophy and/or neuropathy may be observed.	en	Definition	Active	Entire term case sensitive (core metadata concept)	SNOMED CT core
3791513010	SPOAN and SPOAN-related disorder	en	Synonym (core metadata concept)	Active	Entire term case sensitive (core metadata concept)	SNOMED CT core
3791514016	Spastic paraplegia, optic atrophy, neuropathy and spastic paraplegia, optic atrophy neuropathy-related disorder	en	Synonym (core metadata concept)	Active	Entire term case insensitive (core metadata concept)	SNOMED CT core
3791515015	Spastic paraplegia, optic atrophy, neuropathy and spastic paraplegia, optic atrophy neuropathy-related disorder (disorder)	en	Fully specified name	Active	Entire term case insensitive (core metadata concept)	SNOMED CT core
7672461000241113	syndromes apparentés au syndrome SPOAN (spastic paraplegia, optic atrophy, neuropathy)	fr	Synonym (core metadata concept)	Active	Only initial character case insensitive (core metadata concept)	SNOMED CT Switzerland NRC maintained Module
7672471000241117	syndromes apparentés au syndrome de paraplégie spastique, atrophie optique, neuropathie	fr	Synonym (core metadata concept)	Active	Entire term case insensitive (core metadata concept)	SNOMED CT Switzerland NRC maintained Module
588461000274110	SPOAN und SPOAN-verwandte Krankheiten	de	Synonym (core metadata concept)	Active	Entire term case sensitive (core metadata concept)	SNOMED CT Switzerland NRC maintained Module
3394171001000116	Spastische Paraplegie-Optikusatrophie-Neuropathie und verwandte Krankheiten	de	Synonym (core metadata concept)	Active	Entire term case sensitive (core metadata concept)	SNOMED CT Switzerland NRC maintained Module