Oppositional Defiant Disorder (ODD) is a behavioral condition commonly diagnosed in children and adolescents. It is characterized by a pattern of angry, irritable mood, argumentative behavior, and defiance toward authority figures. Children with ODD may frequently lose their temper, refuse to comply with rules, and deliberately annoy others. The exact cause of ODD is not fully understood, but it may involve a combination of genetic, environmental, and psychological factors. Treatment often includes therapy, such as cognitive-behavioral therapy, and support for families to help manage behaviors and improve communication.