[Anticholinergics during neuroleptic treatment. Value and withdrawal]

In a study on 144 chronic psychotic patients treated with neuroleptics, the authors tried to define a therapeutic schedule for anti-cholinergic drugs use to control parkinsonism induced by anti-psychotic drugs. Systematic treatment by anti-cholinergic drugs seems to be useless, even dangerous, and, if they have to be employed, the treatment must not exceed six months. The authors emphasize and analyse through the literature, the problems of drug abuse, withdrawal and psychological dependence with anti-parkinsonian drugs and their neurochemical effects.