[Off-label use of acetazolamide in a patient with familial hemiplegic migraine and concomitant psychotic episodes].

A 42-year-old patient with cognitive deficits due to childhood meningitis suffered from recurrent episodes of familial hemiplegic migraine. Additionally, he developed concomitant psychotic episodes requiring subsequent in-patient psychiatric treatment. Following combined neurological and psychiatric treatment he always recovered from the episodes within a few weeks time.