Cerebellar ataxia with peripheral neuropathy

Cerebellar ataxia with peripheral neuropathy (Orphanet code 207028) is a group of rare inherited neurological disorders characterized by the combination of progressive cerebellar dysfunction and damage to the peripheral nerves. These conditions affect both the central and peripheral nervous systems, leading to a dual burden of neurological impairment. The cerebellar component causes progressive difficulty with coordination, balance, gait instability, dysarthria (slurred speech), and sometimes eye movement abnormalities such as nystagmus. The peripheral neuropathy component leads to sensory disturbances (numbness, tingling, reduced sensation in the extremities), muscle weakness, diminished or absent deep tendon reflexes, and sometimes pain in the hands and feet. This clinical grouping encompasses several distinct genetic entities in which ataxia and neuropathy co-occur as defining features. The peripheral neuropathy may be sensory, motor, or mixed sensorimotor in nature, and can be axonal or demyelinating depending on the specific underlying genetic cause. Electrophysiological studies (nerve conduction studies) and nerve biopsy may help characterize the type of neuropathy. Brain MRI typically shows cerebellar atrophy. There is currently no curative treatment for cerebellar ataxia with peripheral neuropathy. Management is supportive and multidisciplinary, including physical therapy and occupational therapy to maintain mobility and function, speech therapy for dysarthria, orthotic devices for foot deformities or gait instability, and pain management for neuropathic symptoms. Genetic counseling is recommended for affected individuals and their families. The prognosis and rate of progression vary depending on the specific genetic subtype.

Common questions about Cerebellar ataxia with peripheral neuropathy