This is a disorder in children marked by defiant behavior to authority figures. Children with ODD will show signs of being uncooperative, defiant, and hostile toward peers, parents, teachers, and other authority figures. They are more troubling to others than they are to themselves.
The cause of oppositional defiant disorder is unknown but likely involves a combination of genetic and environmental factors.
Symptoms generally begin before a child becomes a teenager. They include irritable mood, argumentative and defiant behavior, aggression and vindictiveness that last longer than six months and cause significant problems at home or school.