PRRT2

A hyperkinetic disorder Familial dyskinesia with facial myokymia (also known as ADCY5-related dyskinesia) is an autosomal dominant mixed hyperkinetic disorder characterized by paroxysmal choreiform, myoclonic, and/or dystonic movements of the limbs and neck with frequent facial involvement. Onset is typically from infancy to late adolescence. The severity is variable, sometimes resulting in difficulty walking and