The prevalence of personality disorder among UK primary care attenders

Objective: To determine the prevalence rate of personality disorder among a consecutive sample of UK primary care attenders. Associations between a diagnosis of personality disorder, sociodemographic background and common mental disorder were examined. Method: Three hundred and three consecutive primary care attenders were examined for the presence of ICD-10 and DSM-4 personality disorders using an informant-based interview. Results: Personality disorder was diagnosed in 24% (95% CI: 19-29) of the sample. Personality-disordered subjects were more likely to have psychiatric morbidity as indicated by GHQ-12, to report previous psychological morbidity, to be single and to attend the surgery on an emergency basis. 'Cluster B' personality disorders were particularly associated with psychiatric morbidity. Conclusion: There is a high prevalence rate of personality disorders among primary care attenders. These disorders are associated with the presence of common mental disorder and unplanned surgery attendance. Personality disorders may represent a significant source of burden in primary care.