Orofacial dyskinesias and choreiform movements of limbs occur with
moderate frequency among psychiatric patients. Abnormal involuntary
movements are symptoms of a wide variety of neurological and medical
disorders. For both therapeutic and medicolegal reasons, psychiatric
patients should be thoroughly evaluated before being given the diagnosis of
tardive dyskinesia. This review presents the differential diagnosis of
disorders associated with orofacial and appendicular choreiform involuntary
movements. In addition, this paper provides a guide to the clinical and
laboratory evaluation of patients with these symptoms.Abstract Teaser