Genetics:
Autosomal dominant
Ca++ CANA1A chr. 19p13.1
Clinical features:
2nd decade. Paroxysmal cerebellar ataxia
Lasts hours: Vertigo, diplopia, nystagmus
Progressive signs
Associated with absence seizures in some
Findings on investigations:
MRI: vermian atrophy
Treatment:
Responds to acetazolamide