Mild tardive dyskinesia: an 8-year follow-up study

The authors re-examined 20 patients who were found to exhibit mild tardive dyskinesia (TD) involving only one body area in 1980. Of these, 11 still showed TD of the same degree, whereas 4 had no TD and 5 aggravated TD. The authors conclude that mild TD involving one body area should be included in prevalence studies and that Schooler & Kane's definition of minimal manifestation of TD should be extended to include these patients.