Oppositional Defiant Disorder (ODD) is characterized by persistent disruptive behaviors in children and teens, often manifesting as arguments with authority figures, anger issues, and difficulty maintaining friendships. Factors contributing to ODD include genetic predispositions, environmental influences, and family instability, while treatment typically involves psychotherapy, family therapy, and potentially medication for co-occurring mental health issues. Effective strategies for managing ODD focus on positive behavior reinforcement and improving parent-child interactions.