Tardive dyskinesia in the course of antidepressant therapy: a prevalence study and review of the literature.

The authors present a prevalence study of tardive dyskinesia (TD) in the course of antidepressant therapy. Of the 50 patients evaluated, three developed TD. TD developed rapidly and in a short period of time. Withdrawal of antidepressant improved TD in two patients. The literature on TD developing in the course of antidepressant therapy is reviewed, and the different etiological theories are examined.