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Epidemiology Prevalence Prevalence

The estimated prevalence of diagnosed ADHD in the US varies, but epidemiological studies suggest it may be increasing among children, adolescents, and adults

In 2016, ~6.1 million (9.4%) children aged 2–17 years had ever received an ADHD diagnosis3

2% aged 2-5 years3

9.6% aged 6-11 years3

13.6% aged 12-17 years3

Girls, 5.6%3; Boys, 12.9%3

Children and adolescents with ADHD diagnosis in 20114

History of ADHD diagnoses by a healthcare provider as reported by parents increased by approximately 5% per year between 2003 and 2011 among children and adolescents aged 4-17 years5

7.8% in 2003

9.5% in 2007

11.0% in 2011

As many as 60% of individuals with ADHD symptoms in childhood continue to have ADHD symptoms as adults6

Adults with ADHD diagnosis

4.4-5.2% aged 18-44 years7-9

2.8-3.5% aged 50 years or older10

More adults >50 years who are experiencing symptoms of ADHD are seeking assessment for the first time11

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What is ADHD?




3. Danielson ML, Bitsko RH, Ghandour RM, Holbrook JR, Kogan MD, Blumberg SJ. Prevalence of parent-reported ADHD diagnosis and associated treatment among US children and adolescents, 2016. J Clin Child Adolesc Psychology. 2018;47(2):199-212.
4. Visser S, Danielson M, Bitsko R, et al. Trends in the Parent-Report of Health Care Provider-Diagnosis and Medication Treatment for ADHD disorder: United States, 2003–2011. J Am Acad Child Adolesc Psychiatry. 2014,53(1):34–46.e2.
5. U.S. Centers for Disease Control and Prevention (CDC). Key Findings: Trends in the Parent-Report of Health Care Provider-Diagnosis and Medication Treatment for ADHD: United States, 2003–2011. 2014. Available at
6. Harpin VA. The effect of ADHD on the life of an individual, their family, and community from preschool to adult life. Arch Dis Child. 2005; 90 (Suppl 1):i2-i7.
7. Ustun B, Adler LA, Rudin C, et al. The World Health Organization Adult Attention-Deficit/Hyperactivity Disorder Self-Report Screening Scale for DSM-5. JAMA Psychiatry. 2017;74:520-526.
8. Goodman DW. ADHD in adults: update for clinicians on diagnosis and assessment. Prim Psychiatry. 2009;16(11):38.
9. Kessler RC, Adler L, Barkley R, et al. The prevalence and correlates of adult ADHD in the United States: Results from the National Comorbidity Survey Replication. Am J Psychiatry. 2006;163(4):716-723.
10. Goodman DW, Mitchell S, Rhodewalt L, et al. Clinical presentation, diagnosis and treatment of attention-deficit hyperactivity disorder (ADHD) in older adults: a review of the evidence and its implications for clinical care. Drugs Aging. 2016;33(1):27–36.
11. Gadol N. ADHD in Adults: An Overview. MedPage Today. November 20, 2017. Available at