Tardive dyskinesia: tremors in law and medicine.

Although debate exists as to the incidence and prevalence of antipsychotic-induced tardive dyskinesia (TD), it is readily accepted that antipsychotics can and often do induce this potentially irreversible movement disorder. Studies commonly report a prevalence rates of 25 to 40 percent and incidence rates of 1 to 3 percent annually.'-' Contemporary and controversial research suggests that tardive dyskinesia may be part of the normal aging process occurring in up to 32 percent of persons never exposed to an antipsychotic. ~3 Despite these findings. a treating