Attention-deficit hyperactivity disorder epidemiology and demographics

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Kiran Singh, M.D. [2]

Attention-deficit hyperactivity disorder Microchapters
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Overview
Historical Perspective
Classification
Pathophysiology
Causes
Differentiating Attention-Deficit Hyperactivity Disorder from other Diseases
Epidemiology and Demographics
Risk Factors
Natural History, Complications and Prognosis
Diagnosis
Diagnostic Criteria
History and Symptoms
Psychiatric Examination
Laboratory Findings
Imaging Findings
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Overview

The prevalence of attention-deficit hyperactivity disorder (ADHD) is 5,000 per 100,000 (5%) and 2,500 per 100,000 (2.5%) in children and adults, respectively.

Epidemiology and Demographics

Prevalence

• The prevalence of ADHD in children is 5,000 per 100,000 (5%) of the overall population.

• The prevalence of ADHD in adults is 2,500 per 100,000 (2.5%) of the overall population.

Incidence

Based on the Health Resources and Services Administration's National Survey of Children's Health, the percentage of children age 4-17 years diagnosed with ADHD increased from 7.8 percent in 2003 to 9.5 percent in 2007.

Age

ADHD is most commonly identified in school-aged children. For an adult to be diagnosed with ADHD, the patient’s symptoms must have been present prior to the age of 12.