Psychotherapy for chronic depressive disorders
Considerable research has demonstrated the efficacy of a wide range of different psychotherapies for acute major depression, including individual psychotherapies [1,2], group psychotherapies [3,4] and marital/family treatments [5,6]. Knowledge regarding the efficacy of psychosocial treatments for chronic depressive disorders, however, is lacking, as few studies have explicitly examined the efficacy of psychotherapy for them . Moreover, with a few notable exceptions (e.g., see Ref. 8), the small sample sizes and methodological limitations in these studies constrain our ability to draw firm conclusions regarding the efficacy of individual psychotherapy as the sole treatment for chronic depressive disorders.
Handbook of Chronic Depression: Diagnosis and Therapeutic Management
Keitner, Gabor I. and Cardemil, Esteban V., "Psychotherapy for chronic depressive disorders" (2003). Psychology. 248.