Wiktionary
n. A psychological disorder of childhood or adolescence, characterized by persistent antisocial behaviours.
Wikipedia
Conduct disorder (CD) is a mental disorder diagnosed in childhood or adolescence that presents itself through a repetitive and persistent pattern of behavior in which the basic rights of others or major age-appropriate norms are violated. These behaviors are often referred to as " antisocial behaviors." It is often seen as the precursor to antisocial personality disorder, which is not diagnosed until the individual is 18 years old.
Conduct disorder is estimated to affect 51.1 million people globally as of 2013.
Usage examples of "conduct disorder".
Half or more of ADHD children are also diagnosed Oppositional Defiant Disorder (with the subtle implication that there is more than a brain disorder here) or Conduct Disorder.