At what age does antisocial personality disorder (ASPD) develop?

At what age does antisocial personality disorder (ASPD) develop?

Traits of ASPD usually develop during late childhood or the early teen years. Before age 18, the condition gets diagnosed as conduct disorder. Children with conduct disorder may lie, steal, ignore rules or bully other children.

Sometimes parents or healthcare providers miss the signs of conduct disorder. The signs may overlap with other conditions like attention-deficit/hyperactivity disorder (ADHD), depression or oppositional defiant disorder.

When children get diagnosed and treated early, the condition may not continue into adulthood. If the behavior does continue, the diagnosis becomes antisocial personality disorder at age 18.