[Spontaneous oral dyskinesia. Successful treatment with tetrabenazine (author's transl)].

Tetrabenazine (50-150 mg/day) was a moderate to excellent efficacy in each of six patients with severe spontaneous oral dyskinesia. Slight akinesia, rigidity, and transient disorientation were occasional side effects that could easily be controlled and were tolerated by the patient in view of the lasting amelioration of this debilitating symptom. When tetrabenazine was administered for blepharospasm, only two of six cases showed partial improvement with more severe side effects.