Oppositional Defiant Disorder (ODD) is a behavioral condition typically diagnosed in childhood, marked by ongoing patterns of angry or irritable mood, argumentative behavior, and defiance toward authority figures. Children and adolescents with ODD may frequently lose their temper, argue with adults, deliberately disobey rules, and exhibit spiteful or vindictive behavior. While occasional defiance is normal in children, ODD involves persistent and disruptive behaviors that interfere with daily functioning at home, school, and in social settings. Early diagnosis and intervention are crucial, and treatment often includes therapy, parental guidance, and support from specialized rehabilitation centers to promote positive behavior and emotional regulation.