Conduct disorder (CD) is a psychological disorder diagnosed in childhood or adolescence that presents itself through a repetitive and persistent pattern of behaviour in which the basic rights of others or major age-appropriate norms are violated. These behaviours are often referred to as "antisocial behaviours. It is often seen as the precursor to antisocial personality disorder.
Teen agers with this disorder has been described as delinquent or anti-social. Some teenagers with conduct disorder may have symptoms of other psychiatric disorder.