Impulsivity or comorbidity in bulimia nervosa. A controlled study of deliberate self-harm and alcohol and drug misuse in a community sample.

BACKGROUND: Studies showing high rates of alcohol and drug misuse and deliberate self-harm in bulimia nervosa have led some authors to call for a distinct diagnostic subgroup, sometimes termed "multi-impulsive bulimia". However, these studies have been uncontrolled and of clinic samples an...