Gender differences in comorbidity of conduct disorder among adolescents in Northern Finland.

As compared to boys with conduct disorder (CD), suicidality (including suicidal ideation and behaviour) was significantly more commonly the cause of hospitalization among girls with CD. Among somatic conditions, there was a significant predominance in self-reported allergies among girls. Girls had more often diagnosed comorbid post-traumatic stress disorder and marginally significantly more major depressive disorder. Girls with CD seem to have an increased tendency to develop both comorbid psychiatric and somatic conditions as well as suicidality. New clinical aspects in treatment of CD and comorbid disorders among girls are discussed.