A group of behavioral disorders that are characterized by ongoing patterns of defiant and hostile behaviors that children and adolescents direct at authority figures. The two most common forms of DBD are oppositional defiant disorder (ODD) and conduct disorder.

Most kids will act up or become disruptive or defiant sometimes. Disruptive and conduct disorders, however, involve much more severe and longer-lasting behaviors than typical, short-lived episodes.

Disruptive, impulse-control and conduct disorders refer to a group of disorders that include oppositional defiant disorder, conduct disorder, intermittent explosive disorder, kleptomania and pyromania. These disorders can cause people to behave angrily or aggressively toward people or property. They may have difficulty controlling their emotions and behavior and may break rules or laws.