Familial paroxysmal dyskinesia.

ABSTRACT

Familial paroxysmal dyskinesia is characterized by recurrent episodic dystonia and/or choreoathetosis with totally quiescent intervening periods. It is an autosomal dominant with variable penetrance basal ganglia disorder. An 11 year old girl who presented with brief kinesigenic paroxysmal dyskinesia is reported. The abnormal movements were dramatically controlled by diphenylhydantoin. Spontaneous remission was seen in the elder sister of this family.