[Dysthymic disorders].

Long lasting, low intensity depressive episodes have been diversely integrated according to the classifications types or the psychodynamic points of view. The concept of anxious persistent lasting depression, neurotic depressive states, neurotic depression ... have been unified into the dysthymic disorder category of the DSM classification. This concept unification have been a topic of dispute considering that dysthymic disorder was a restrictive, heterogeneous an extensively comorbid diagnosis. Nevertheless the definition of this category offers the opportunity to place the notions of temperament, personality, adjustment disorder. Including dysthymic disorders as a category inside of the mood disorders classification suggests the interest of using an antidepressive medication in presence of chronic depressive states not included in the major depressive disorder category.