Suicidality and personality disorders in adolescence.

The prevalence of personality disorders is higher among suicidal adolescent inpatients (15.3% out of 163) than among nonsuicidal adolescent inpatients (8.6% out of 374). Among the personality disorders, the borderline syndromes or emotionally unstable personality disorders were more frequent in the suicidal adolescents. Limited emotional control, intolerance of frustration, and impulsiveness are important characteristics of suicidal adolescents.