Abstract
This review discusses the changes in the diagnostic criteria for depressive disorders as outlined in the Diagnostic and Statistical Manual of Mental Disorders, fifth edition (DSM-5), and recent findings exploring the etiology of and treatment strategies for these disorders. Depressive disorders are typically characterized by depression in the absence of a lifetime history of mania or hypomania. New developments in the DSM-5 include the recognition of new types of depressive disorders, such as disruptive mood dysregulation disorder, persistent depressive disorder, premenstrual dysphoric disorder, and the addition of catatonic features as a specifier for persistent depressive disorder. These diagnostic changes have important implications for the prognosis and treatment of this condition. A thorough understanding of both the clinical phenotype and the biosignature of these conditions is essential to provide individualized, long-term, effective treatments to affected individuals. This review contains 1 table and 52 references Key words: brain volumes, depressive disorders, DSM-5, hormones, inflammation, neuropeptides, somatic therapy, stress
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