- CD (Conduct Disorder) : CD or Conduct disorder is a syndrome marked by chronic disregard for the rights of others, including specific behaviors, such as stealing, lying, cheating, and engaging in acts of violence; a disorder in which a child or adolescent repetitively and persistently violates either the basic rights of others or major societal norms or rules. It is a development-related disorder that involves repeated violations of the rights of others and society's norms and laws; the childhood precursor of Antisocial personality disorder in adulthood.