Percentage of U.S. adults with a diagnosed psychological disorder

* Anxiety disorder includes panic disorder, agoraphobia, specific phobia, social phobia, generalized anxiety disorder, post-traumatic stress disorder, obsessive compulsive disorder, and adult separation anxiety disorder. Impulse-control disorder includes oppositional defiant disorder, conduct disorder, attention deficit/hyperactivity disorder, and intermittent explosive disorder. Substance disorder includes alcohol abuse, drug abuse, and nicotine dependence.