spastic ataxia 2 (Monarch Disease Ontology identifier MONDO_0012651) can be described as follows. Autosomal recessive spastic paraplegia type 58 is a rare, complex subtype of hereditary spastic paraplegia characterized by variable onset of slowly progressive lower limb spasticity and weakness and prominent cerebellar ataxia, associated with gait disturbances, dysarthria, increased deep tendon reflexes and extensor plantar responses. Additional features may include involuntary movements (i.e. clonus, tremor, fasciculations, chorea), decreased vibration sense, oculomotor abnormalities (e.g. nystagmus) and distal amyotrophy in the upper and lower limbs. Also known as: KIF1C spastic ataxia, SPAX2, SPG58, autosomal recessive spastic ataxia type 2, spastic ataxia caused by mutation in KIF1C, spastic ataxia type 2.