oppositional defiant disorder

oppositional defiant disorder A behavior disorder of children and teens characterized by an ongoing pattern (for at least 6 months) of uncooperative, defiant, and hostile behavior toward authority figures that seriously disrupts normal day-to-day functioning. Symptoms include anger, defiance, temper tantrums, revenge-seeking behaviors, and hateful or mean talking. Abbreviated ODD. The cause of ODD is unknown. Treatment may include individual and family therapy.