[Psychopathy and drug addiction].

The author presents a study comparing psychopathic personality and drug addiction with regard to diagnosis, aethiopathogenia and treatment. Two third of drug addicts have associated personality disorders related to psychopathic disorders. Treatment on Therapeutic Communities provides a good alternative to both treatments in out patients or in open care units. The results obtained support the value of such a system in discussions about the taking over of patients in Social Defense Institutes and in jails.