• J M Azorin, A Kaladjian, M Adida, E Fakra, R Belzeaux, E Hantouche, and S Lancrenon.
• SHU Psychiatrie Adultes, Sainte-Marguerite Hospital, 13274 Marseille cedex 9, France. Electronic address: jazorin@ap-hm.fr.
• Eur. Psychiatry. 2013 Oct 1;28(8):463-8.

ObjectiveTo analyze the interface between borderline personality disorder (BPD) and bipolarity in depressed patients comorbid with BPD.MethodsAs part of National Multi-site Study of 493 consecutive DSM-IV major depressive patients evaluated in at least two semi-structured interviews 1 month apart, 19 (3.9%) had comorbid BPD (BPD+), whereas 474 (96.1%) did not manifest this comorbidity (BPD-).ResultsCompared to BPD (-), BPD (+) patients displayed higher rates of bipolar (BP) disorders and temperaments, an earlier age at onset with a family history of affective illness, more comorbidity, more stressors before the first episode which was more often depressive or mixed, as well as a greater number and severity of affective episodes.ConclusionsThe hypothesis which fitted at best our findings was to consider BPD as a contributory factor in the development of BP disorder, which could have favoured the progression from unipolar major depression to BP disorder. We could not however exclude that some features of BP disorder may have contributed to the development of BPD.Copyright © 2012 Elsevier Masson SAS. All rights reserved.

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