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The re-labelling of dysthymic disorder to persistent depressive disorder in DSM-5: old wine in new bottles?

Rhebergen, Didia; Graham, Rebeccab

Current Opinion in Psychiatry:
doi: 10.1097/YCO.0000000000000022
MOOD AND ANXIETY DISORDERS: Edited by Cornelius Katona and Gordon Parker
Abstract

Purpose of review: Dysthymic disorder and other chronic depressive disorders have recently been merged in DSM-5 into a ‘persistent depressive disorder’ category. As its introduction in DSM-III, the validity of dysthymic disorder has long been challenged, posing concerns regarding the validity of its successor – persistent depressive disorder. This review aims to present recent findings regarding the validity and utility of dysthymic disorder.

Recent findings: Several recent studies raise questions regarding the validity of dysthymic disorder, namely, results indicating a significant overlap between dysthymic disorder and other mood and/or anxiety disorders, failure of such a diagnosis to predict illness outcome and the lack of any validation strategy identifying that it is a depressive entity or subtype.

Summary: Research findings indicate that dysthymic disorder is a heterogeneous diagnosis encompassing many different depressive (and anxiety or personality weighted) conditions, and without clear evidence of its validity as a diagnostic entity. As dysthymic disorder is a key component of DSM-defined persistent depressive disorder – the latter is at similar risk of providing a heterogeneous domain diagnosis, and thus limiting identification of specific causative factors and preferential treatment modality.

Author Information

aDepartment of Psychiatry and EMGO+ Institute for Health and Care Research, VU University Medical Center Amsterdam, The Netherlands

bSchool of Psychiatry, University of NSW, Black Dog Institute, Sydney, Australia

Correspondence to Didi Rhebergen, MD, PhD, Department of Psychiatry/EMGO+ Institute, VU University Medical Center, AJ Ernststraat 1187, 1081 HJ Amsterdam, The Netherlands. Tel: +31 20 788 5659; fax: +31 20 788 5664; e-mail: d.rhebergen@ggzingeest.nl

© 2014 Wolters Kluwer Health | Lippincott Williams & Wilkins