What is the global incidence of attention deficit/hyperactivity disorder (ADHD)?

Updated: Oct 01, 2019
  • Author: Stephen Soreff, MD; Chief Editor: Glen L Xiong, MD  more...
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Answer

In Great Britain, incidence is reported to be less than 1%. The differences between the US and British reported frequencies may be cultural ("environmental expectations") and due to the heterogeneity of ADHD (ie, the many etiological paths to get to inattention/distractibility/hyperactivity). Furthermore, the International Classification of Diseases, 10th Revision (ICD-10) criteria for ADHD used in Great Britain may be considered stricter than the DSM-5 criteria. However, other studies suggest that the worldwide prevalence of ADHD is between 8% and 12%.


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