[Evidence-based psychotherapy: addiction and personality disorders as comorbidities].

A large number of studies have shown that various psychotherapeutic methods have a positive effect on the course of addiction and personality disorders when they are treated separately. Co-morbid occurrence of both disorders is common but a chronologically separated treatment often leads to renewed occurrence of the symptoms of the initially treated disorder. Failures of abstinence motivation, severe drug craving and the activation of dysfunctional behavior patterns frequently lead to renewed consumption of addictive substances and thus endanger the further course of treatment. So far, evidence of effectiveness exists only for dialectic behavior therapy and dual focus schema therapy. This article summarizes the current state of knowledge and introduces both methods by highlighting the core therapeutic strategies.