title: Definition of ADHD.
authors.forename: M
authors.initials: M
authors.lastname: Levin
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001289:Attention Deficit Disorder with Hyperactivity / Q000175:diagnosis* / Q000523:psychology; D002648:Child; D006801:Humans; D009626:Terminology as Topic