[Late extrapyramidal hyperkinesis and neuroleptic withdrawal dyskinesia. Practical problems].

Neuroleptic-induced, late-occurring dyskinesia has gained more and more of importance. Essential causes are: increased continued long-term treatment as well as the advanced age of long-term patients treated with neuroleptics. Problems of daily practice and their treatment find little attention, contrary to the wide-spread literature on theoretical cases and diagnostic criteria of disturbances. Withdrawal- and tardive dyskinesiae are the most important among neuroleptic-induced dyskinesiae. The manifold disturbances of motion are generally found in the orofacial region, the trunk, and the extremities. Errors in differential diagnosis will occur occasionally.