The prevalence of borderline personality among primary care patients with chronic pain.

This study was designed to explore the prevalence of borderline personality disorder among primary care patients (N=17) with various pain syndromes. All participants completed two self-report measures [Personality Diagnostic Questionnaire-Revised (PDQ-R); Self-Harm Inventory (SHI)] and a semi-structured interview [Diagnostic Interview for Borderlines (DIB)] for the assessment of borderline personality disorder. According to study measures, 8 (47.1%), 5 (29.4%), and 8 (47.1%) participants scored positively on the PDQ-R, SHI, and DIB, respectively. Nearly 25% of the sample scored positively on two measures, and 18% scored positively on all three measures. In this sample, the prevalence of BPD was substantial. Chronic pain may be a manifestation of a self-regulatory disturbance among some patients with BPD.