title: Attention deficit hyperactivity disorder: an update.
abstract: Attention deficit hyperactivity disorder (ADHD) is the most common neurobehavioral disorder, affecting 3% to 5% of school-aged children. Of the 3 subtypes--predominantly inattentive, predominantly hyperactive/impulsive, and a combined subtype--the latter is the most commonly represented group, accounting for 50% to 70% of all ADHD individuals. Stimulant medication is the cornerstone of management; however, stimulants with a short duration of action have been problematic for some patients. Recent technologic advances in delivery systems offer many patients the option of a once-daily dosage.
authors.affiliation: Department of Pediatrics, University of Calgary, Calgary, Alberta, Canada.
authors.forename: Alexander K C
authors.initials: AK
authors.lastname: Leung
authors.forename: Jean François
authors.initials: JF
authors.lastname: Lemay
mesh_terms: D017677:Age Distribution; D001289:Attention Deficit Disorder with Hyperactivity / Q000175:diagnosis* / Q000453:epidemiology / Q000628:therapy*; D000697:Central Nervous System Stimulants / Q000627:therapeutic use*; D002648:Child; D002675:Child, Preschool; D004305:Dose-Response Relationship, Drug; D004334:Drug Administration Schedule; D005260:Female; D006801:Humans; D008297:Male; D009483:Neuropsychological Tests; D015995:Prevalence; D011379:Prognosis; D018570:Risk Assessment; D012720:Severity of Illness Index; D017678:Sex Distribution
chemical_list: D000697:Central Nervous System Stimulants