Conduct Disorder is a serious behavior disorder. It is a step beyond Oppositional Defiance Disorder which, itself, is a serious behavioral disorder. These two disorders are usually used to describe those 18 and under. Conduct Disorder needs psychiatric attention, cognitive behavioral therapy (seeing a therapist), and probably medication to prevent severe misbehaviors for the benefit of the patient and society. Prevention is key as many in prison have a history of Conduct Disorder.