Conduct disorder is a serious mental disorder with a heterogeneous etiology that is frequently encountered in child and adolescent psychiatric clinics, although there are social and international differences. Conduct disorder can be defined as violating the basic rights of others, age-appropriate social norms and values, or existing rules with consistently aggressive behavioral patterns. It has been defined under various headings since DSM-II and most recently in DSM-5 under the heading "Disruptive Disorders, Impulse Control and Conduct Disorders". Genetic, individual, and psychosocial factors play a role in the etiology and constitute a broad etiology. Although its onset dates to childhood, if assistance is not sought, it can lead to more serious mental disorders. Conduct disorders are associated with several mental disorders. Therefore, a differential diagnosis should be made and an effective treatment option should be established. No specific medications were available for treatment. Different disciplines can collaborate for a long time to achieve successful results. In this article, the definition of conduct disorder, DSM-5 diagnostic criteria, epidemiology, etiology, comorbidity, differential diagnosis, prognosis, and treatment approaches are reviewed.