Ataxia is a neurological disorder which consists of gross lack of coordination of muscle movement; that is to say an abnormality of muscle control. Ataxia results in a jerky and unsteady motion of the trunk and limbs. It is a dysfunction of parts of the nervous system which coordinate movement. Cerebellar ataxia is a dysfunction of the cerebellum.
Not only can ataxia affect your movements, but also your speech, your eye movement and your ability to swallow. Ataxia results from damage to the cerebellum, stroke and cerebral paulsy.