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Risk Factors for Attention Deficit Hyperactivity Disorder (ADHD)

A risk factor is something that increases your likelihood of getting a disease or condition.

It is possible to develop ADHD with or without the risk factors listed below. However, the more risk factors you have, the greater your (or your child’s) likelihood of developing ADHD.

Risk factors include:

  • Gender—Boys are more frequently diagnosed with ADHD than girls.
  • Heredity—ADHD and similar disorders tend to run in families, suggesting there may be a genetic component. People with a parent or a sibling, especially an identical twin, with ADHD are at increased risk of developing the condition.
  • Age—Symptoms typically appear in young children aged 3-6 years old.
  • Maternal factors, such as:
    • Smoking during pregnancy
    • Preterm labor
    • Mental health conditions
    • Exposure to certain environmental toxins, such as polychlorinated biphenyls (PCBs)
  • Childhood exposures to environmental toxins, such as lead, which is found in pipes or paint in older buildings
  • Premature birth
  • Overall parental health—A child may be at a higher risk of ADHD if their parent has certain conditions, such as alcohol use disorder or conversion disorder.

Other factors that may increase the risk of ADHD include:

  • Head injury at a young age (less than 2 years old)
  • Being born with a serious heart condition
  • Having Turner syndrome (a genetic condition)
  • Being exposed to certain pesticides
  • Spending over 2 hours a day watching TV or playing video games when young
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References:

About ADHD. Children and Adults with Attention-Deficit/Hyperactivity Disorder website. Available at:
...(Click grey area to select URL)
Accessed October 4, 2017.
Attention-deficit hyperactivity disorder (ADHD) in adults. EBSCO DynaMed Plus website. Available at: http://www.dynamed.... Updated December 27, 2016. Accessed October 4, 2017.
Attention-deficit hyperactivity disorder (ADHD) in children and adolescents. EBSCO DynaMed Plus website. Available at: http://www.dynamed.... Updated May 23, 2017. Accessed October 4, 2017.
Attention deficit hyperactivity disorder (ADHD). National Institute of Mental Health website. Available at: https://www.nimh.nih.gov/health/publications/attention-deficit-hyperactivity-disorder-adhd-the-basics/index.shtml. Updated 2016. Accessed October 4, 2017.
Stern T, Rosenbaum J, et al. Massachusetts General Hospital Comprehensive Clinical Psychiatry. Philadelphia, PA: Mosby Elsevier; 2008.
Understanding ADHD: Information for parents. Healthy Children—American Academy of Pediatrics website. Available at: https://www.healthychildren.org/English/health-issues/conditions/adhd/Pages/Understanding-ADHD.aspx. Updated January 9, 2017. Accessed October 4, 2017.
What is ADHD? Kids Health—Nemours Foundation website. Available at:
...(Click grey area to select URL)
Updated July 2014. Accessed October 4, 2017.
2/4/2010 DynaMed Plus Systematic Literature Surveillance https://www.dyname...: Froehlich TE, Lanphear BP, Auinger P, et al. Association of tobacco and lead exposures with attention-deficit/hyperactivity disorder. Pediatrics. 2009;124(6):1054-1063.
1/13/2014 DynaMed Plus Systematic Literature Surveillance https://www.dyname...: Silva D, Colvin L, Hagemann E, Bower C. Environmental risk factors by gender associated with attention-deficit/hyperactivity disorder. Pediatrics. 2014;133(1):e14-e22.
11/29/2017 DynaMed Plus Systematic Literature Surveillance https://www.dyname...: Man KKC, Chan EW, et al. Prenatal antidepressant use and risk of attention-deficit/hyperactivity disorder in offspring: population based cohort study. BMJ. 2017 May 31;357:j2350.
Last reviewed September 2017 by EBSCO Medical Review Board Adrian Preda, MD
Last Updated: 10/13/2015

 

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