Minor depressive disorder, also known as minor depression, is a mood disorder that does not meet the full criteria for major depressive disorder but at least two depressive symptoms are present for a long time. These symptoms can be seen in many different psychiatric and mental disorders, which can lead to more specific diagnoses of an individual's condition. However, some of the situations might not fall under specific categories listed in the Diagnostic and Statistical Manual of Mental Disorders. Minor depressive disorder is an example of one of these nonspecific diagnoses, as it is a disorder classified in the DSM-IV-TR under the category Depressive Disorder Not Otherwise Specified (DD-NOS).[1] The classification of NOS depressive disorders is up for debate. Minor depressive disorder as a term was never an officially accepted term, but was listed in Appendix B of the DSM-IV-TR. This is the only version of the DSM that contains the term, as the prior versions and the most recent edition, DSM-5, does not mention it.[2][3]
A person is considered to have minor depressive disorder if they experience 2 to 4 depressive symptoms, with one of them being either depressed mood or loss of interest or pleasure, during a 2-week period. The person must not have experienced the symptoms for 2 years and there must not have been one specific event that caused the symptoms to arise. Although not all cases of minor depressive disorder are deemed in need of treatment, some cases are treated similarly to major depressive disorder. This treatment includes cognitive behavioral therapy (CBT), anti-depressant medication, and combination therapy. A lot of research supports the notion that minor depressive disorder is an early stage of major depressive disorder, or that it is simply highly predictive of subsequent major depressive disorder.[2]
^Diagnostic and Statistical Manual of Mental Disorders(PDF) (4th ed.). American Psychological Association. 1994. pp. 320–350. Archived from the original (PDF) on 16 December 2018. Retrieved 17 April 2016.
^ abFils, J. M.; Penick, E. C.; Nickel, E. J.; Othmer, E.; DeSouza, C.; Gabrielli, W. F.; Hunter, E. E. (2010). "Minor Versus Major Depression: A Comparative Clinical Study". The Primary Care Companion to the Journal of Clinical Psychiatry. 12 (1): PCC.08m00752. doi:10.4088/PCC.08m00752blu. PMC 2882809. PMID 20582293.
^Diagnostic and Statistical Manual of Mental Disorders(PDF) (5th ed.). American Psychological Association. 2013. pp. 168–171. Retrieved 17 April 2016.
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