ataxia
n. inability to perform coordinated voluntary movements. It may be seen as a symptom of various disorders, such as multiple sclerosis or cerebral palsy, or it can occur in isolation. It can be heritable, as in Friedreich’s ataxia, or acquired from injury or infection affecting the nervous system. When due to damage to the cerebellum, it is called cerebellar ataxia, and when due to loss of sensory feedback from the muscles and joints, it is called sensory ataxia. —ataxic
adj.