Abstract
Paroxysmal dyskinesias represent an unusual group of movement disorders featuring intermittent involuntary paroxysmal movements including dystonia, chorea, athetosis, ballismus, or a combination of these. Secondary paroxysmal dyskinesias are rare. We report on two patients: a male with Wilson's disease who presented paroxysmal kinesigenic dyskinesias in the titration period with d-penicillamine, and a female who initially developed paroxysmal kinesigenic dyskinesias and turned out to have a subacute sclerosing panencephalitis. Carbamazepine had a remarkable beneficial effect on paroxysmal symptoms in both of them but it does not replace the treatment of the underlying illness.
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