Comorbidity of bulimia nervosa and personality disorder.

Thirty patients meeting DSM-III-R criteria for bulimia nervosa with at least three bingeing episodes a week were compared with 30 age- and sex-matched controls on DSM-III personality measures. The bulimic patients were more likely to display cluster B (histrionic, narcissistic, antisocial, and borderline) personality abnormalities (odds ratio 15.0) and cluster C (avoidant, dependent, compulsive, and passive-aggressive) personality abnormalities (odds ratio 4.3) than were the community controls. This study supports the finding that personality disorder is a possible risk factor for bulimia.