ADHD: General Information

Prevalence of ADHD

It is the most commonly diagnosed behavioral disorder in children.

Source: (DHHS)1

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Back to: « ADHD

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Data from the 2011 National Health Interview Survey (NHIS) indicate that parents of 8.4% of children aged 3 to 17 years had been informed that their child had ADHD. For youth ages 13 to 18, the prevalence rate is 9%.

It is estimated that the prevalence of ADHD among adults is 2.5%.

Source: SAMHSA (DHHS)2

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The most common disorder among this age group is attention-deficit/hyperactivity disorder (ADHD), which affects 8.5 percent of this population.

Source: NIMH (NIH)3

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ADHD is a common brain condition in children. Nationwide, more than 1 in 10 kids ages 4 to 17 have been diagnosed with ADHD.

Source: NIH News in Health (NIH)4

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About 1 in 10 children in the United States, 4-17 years of age, have been diagnosed with ADHD, according to the Centers for Disease Control and Prevention (CDC).

Source: MedLinePlus Magazine (NIH)5

Child Prevalence of ADHD

12-Month Prevalence for Children (8 to 15 years)

ADHD: 8.6%

Source: NIMH (NIH)6

Onset Age of ADHD

ADHD usually begins in childhood but may continue into the adult years.

Source: (DHHS)7

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ADHD begins in childhood and is considered a developmental disorder, but a person may not receive a diagnosis until adolescence or adulthood.

Source: NIMH (NIH)8

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Most children with ADHD receive a diagnosis during the elementary school years. For an adolescent or adult to receive a diagnosis of ADHD, the symptoms need to have been present prior to age 12.

ADHD symptoms can appear as early as between the ages of 3 and 6 and can continue through adolescence and adulthood.

Source: NIMH (NIH)9

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Children with ADHD usually get diagnosed around age 7, but more severe cases may be identified earlier.

Source: NIH News in Health (NIH)10

Gender and ADHD

ADHD is diagnosed much more often in boys than in girls.

Source: (DHHS)11

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The disorder occurs four times as often among boys than girls.

Source: SAMHSA (DHHS)12

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ADHD is more common in males than females and females with ADHD are more likely to have problems primarily with inattention.

Source: NIMH (NIH)13

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  1. Source: (DHHS): what-to-look-for/ behavioral-disorders/ adhd.html
  2. Source: SAMHSA (DHHS): disorders/ mental
  3. Source: NIMH (NIH): health/ statistics/ prevalence/ any-disorder-among-children.shtml
  4. Source: NIH News in Health (NIH): issue/ sep2014/ feature2
  5. Source: MedLinePlus Magazine (NIH): magazine/ issues/ spring14/ articles/ spring14pg15-16.html
  6. Source: NIMH (NIH): health/ statistics/ prevalence/ any-disorder-among-children.shtml
  7. Source: (DHHS): what-to-look-for/ behavioral-disorders/ adhd.html
  8. Source: NIMH (NIH): health/ publications/ could-i-have-adhd-qf-16-3572/ index.shtml
  9. Source: NIMH (NIH): health/ topics/ attention-deficit-hyperactivity-disorder-adhd/ index.shtml
  10. Source: NIH News in Health (NIH): issue/ sep2014/ feature2
  11. Source: (DHHS): what-to-look-for/ behavioral-disorders/ adhd.html
  12. Source: SAMHSA (DHHS): disorders/ mental
  13. Source: NIMH (NIH): health/ topics/ attention-deficit-hyperactivity-disorder-adhd/ index.shtml

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Note: This site is for informational purposes only and is not medical advice. See your doctor or other qualified medical professional for all your medical needs.