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J Affect Disord. 2015 Jan 15;171:137-41. doi: 10.1016/j.jad.2014.09.020. Epub 2014 Oct 8.

Risk factors for treatment resistance in unipolar depression: a systematic review.

Author information

1
Network of centres for Treatment-Resistant Depression, FondaMental Foundation, Créteil 94000, France. Electronic address: dbennabi@chu-besancon.fr.
2
Network of centres for Treatment-Resistant Depression, FondaMental Foundation, Créteil 94000, France.

Abstract

BACKGROUND:

Treatment resistant depression is a complex disorder and an important source of morbidity and mortality. Identification of risk factors of resistance may be useful to improve early recognition as well as treatment selection and prediction of outcome in patients with depression.

METHODS:

The aim of this paper was to review the current status of knowledge regarding risk factors of treatment resistance in unipolar depression, in patients who failed to respond to at least two successive and adequate antidepressant treatments.

RESULTS:

Systematic literature search yielded 8 publications exploring clinical and biological factors. Specific psychiatric comorbidities, psychosocial factors, clinical characteristics of the depressive episode and biological markers emerge as possible risk factor for treatment resistant depression.

LIMITATIONS:

Due to the lack of objective definition and diagnostic criteria for treatment resistant depression, and the paucity of reports on risk factors, our review only summarized a small number of studies.

CONCLUSION:

Future investigations of risk factors should help to improve the understanding of the mechanisms underlying resistance in mood disorders and contribute to improve their therapeutic management.

KEYWORDS:

Treatment resistance-depression-risk factors

PMID:
25305428
DOI:
10.1016/j.jad.2014.09.020
[Indexed for MEDLINE]
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