摘要：Some patients with dysphoria, explosive behaviour, or suicidal ideation, may receive a diagnosis of,
and treatment for Bipolar Disorder (BD) and, not infrequently. The coexistence of these two diagnoses
has been explained in different ways. Some authors include the BPD in the bipolar spectrum; others are
sceptical about the existence of real comorbidity, suggesting a misdiagnosis. This study aimed to assess
the personality of this group of poly-diagnosed patients (PolyD) and hypothesised they had a
pathological borderline organisation. Via the administration of the Schedler Westen Assessment
Procedure (SWAP-200), we compared PolyD patients with those suffering from BPD or BD only. We
performed two different MANCOVAs to test PolyD, BPD and BD patients’ differences in PDfactors,
Q-traits and age. The sample comprised 45 patients (Mean age=43.3, SD=15.7; Females
57.7%, N=26). BD patients (N=15) did not present any personality disorder, they had a higher
functioning and Obsessive Q-traits, and a lower Histrionic PD-factor than both PolyD (N=20) and
BPD (N=10) patients. Compared to PolyD patients, BD had inferior PD-Borderline, PD-Antisocial
factor and Dependent-Masochistic Q-traits, but there were no other differences with BPD patients.
PolyD did not differ from BPD patients in any of the PD-factors and Q-traits. Our results suggest
that PolyD patients are different from BD patients and propose to consider the pathological borderline
personality as a central core of their disease.
