Michael has a history of acting out since he was two years old. As a child, Michael’s acting out consisted of disrespecting his parents. By the age of twelve he was skipping school and hanging out with older boys in the neighborhood. By the time he was fifteen he started using drugs and alcohol. Michael was consistently uncooperative with his parents. He was hostile to all authority figures including teachers and police officers. He would frequently lose his temper and blame everyone else for his misbehavior. What mental disorder was most likely the appropriate diagnosis for Michael?

Oppositional disorder which is also known as Oppositional defiant disorder(ODD) is a type of behavior disorder which are mostly diagnosed in childhood and are characterized by children displaying angry and irritable moods, as well as argumentative and vindictive behaviors,uncooperative, defiant, and hostile toward peers, parents, teachers, and other authority figures.This behavior often disrupts the child's normal daily activities and ODD is thought to be caused by a combination of biological, psychological, and social factors,Inconsistent discipline may play a role in the development.