Acetazolamide-responsive, hereditary, paroxysmal, cerebellar ataxia (medical condition)

A rare genetic disorder characterized by episodes of incoordination and unsteadiness as well as nystagmus (rapid, involuntary eye movements). Stress, exertion, alcohol and coffee may trigger the episodes which can last from hours to days. Type 2 is caused by a defect in the calcium ion gene on chromosome 19p13. See also Episodic ataxia, type 2