• Two members of a family suffer from recurrent attacks of either vertigo or cerebellar incoordination. The occurrence of these two distinct types of attack in the same patient may reconcile the disparate features of previously reported cases of familial periodic ataxia. The finding of downbeating nystagmus suggests a medullary disturbance. As in a previously reported family, the attacks were relieved by acetazolamide.
Donat JR, Auger R. Familial Periodic Ataxia. Arch Neurol. 1979;36(9):568–569. doi:10.1001/archneur.1979.00500450062011
Customize your JAMA Network experience by selecting one or more topics from the list below.