Episodic ataxia: a case report and review of literature.

This report describes the clinical features of a 29 year female presenting with a 3 years history of episodes of cerebellar ataxia, dysarthria and nystagmus lasting 3-5 days, recurring almost every month. Sleep disturbance and buzzing in ears were noted 3-4 days before each episode. No other precipitant factor was present. Family history was negative. She was diagnosed as a case of episodic ataxia type-2 and was successfully treated with acetazolamide, a carbonic anhydrase inhibitor. She was asymptomatic at 2 year followup.