[Drug addiction and personality disorder : reflection on treatment.]

The experience of a treatment in cooccurring disorders of drug addiction and mental health has allowed to document the intervention with people presenting one or more personality disorders. This article describes the integrated program in which is inserted the trajectory of these people. The article highlights the complexity of their clinical portrait as well as the implications of the most current interventions in their treatment. It also underlines some critical moments of this clientele's path. Clinical vignettes are presented to better illustrate remarks. The authors' reflection leads to reconsidering conditions of the intervention. The avenue proposed is that of a differienciated, intermittent but continuous treatment. The possibility of a long term individual treatment for clients adopting this mode, is also considered. This range of possibilities would better respond to the specific chronicity of these two disorders.