From a psychodynamic perspective, dependence disorders, irrespective of the object of addiction, can be seen as the expression of the subject's neurobiological, psychopathological, cultural and social vulnerability. Since vulnerability strengthens and reorganizes the personality, it can drive these subjects to perpetuate pathological behaviors. In this light, behavior disorders belong to the field of addiction diseases, especially considering that the underlying psychopathological structures are close to those observed in addiction, that depression plays a central role, and that their development into toxic addictive behavior (drugs, alcohol, psychotrope) is frequent.