Personality Pathology in Winter Depression: Prevalence and Treatment Trajectories in Cognitive-Behavioral Therapy and Light Therapy.

Personality disorders are highly comorbid with major depression; however, findings are mixed regarding their impact on depression treatment outcomes and trajectories. Limited research has studied personality pathology in winter depression, specifically. This study (1) explored the prevalence of personality pathology in winter depression and (2) examined its effects on winter depression treatment trajectories.