How many adults have ADHD?

Attention Deficit Hyperactivity Disorder (ADHD) is a neurodevelopmental disorder that typically presents in childhood. However, it can persist into adulthood in many cases. The exact prevalence of ADHD among adults is still being studied and can vary depending on the diagnostic criteria used. According to the National Survey on Drug Use and Health (NSDUH) conducted in the United States in 2016, approximately 1.6% of adults aged 18 and older had a current diagnosis of ADHD. This translates to an estimated 4 million adults in the U.S. It's important to note that the actual number of adults with ADHD may be higher as not all cases are diagnosed or reported.