Oppositional defiant disorder (ODD) is characterized by hostile and defiant behavior toward authority figures that is worse than typical behavior seen in other children of the same age. Symptoms include arguing, actively defying or refusing to comply with requests and rules, and deliberately annoying others. ODD affects around 5-15% of school-aged children, with onset usually between ages 3-19. Risk factors include parental rejection, inconsistent parenting, and family conflict. Treatment focuses on meeting the psychological needs of both the child and family through therapies that improve communication and behavior management.