How is antisocial personality disorder diagnosed in teens?

It's not.: Antisocial personality disorder is an adult diagnosis. Prior to that, in childhood and adolescence, the diagnosis would be conduct disorder.

Conduct Disorder : In adolescents this is what's known as conduct disorder. The features of this are aggression to people and animals, destruction of property, deceitfulness or theft, and serious violations of social rules. The diagnosis changes at age 18 from conduct disorder toantisocial personality disorder.