One of a group of hereditary degenerative diseases of the spinal cord or cerebellum. These diseases cause tremor, spasm, and wasting of muscle.

This is a gradual progressive disease of the spinal cord usually caused by infection with the human t-cell lymphotropic virus. The symptoms of this virus include back pain with gradual loss of motor functions in one or both legs, ataxia, and urinary incontinence.

Ataxia as a result of trauma or infection may be a temporary condition, or leave some degree of permanent disability. Hereditary ataxias are usually progressive syndromes, with symptoms becoming more disabling over varying periods of time.

Hereditary spastic paraplegia (HSP) is a hereditary degenerative disorder affecting the corticospinal tracts (long never fibers that supply the upper and lower limbs) within the spinal cord.

Wobbler disease is an ataxia caused by the compression and degeneration of the peripheral nerves due to compression of the cervical spinal column.