THURSDAY, Oct. 10, 2024 (HealthDay News) -- More than 15.5 million U.S. adults have been diagnosed with ADHD, and nearly three-quarters of those taking medication to treat it say drug shortages are hampering their ability to get help, a new report finds. According to the U.S. Centers for Disease Control and Prevention (CDC), a national survey conducted last fall found that 6% of adults have a current diagnosis of attention deficit hyperactivity disorder (ADHD), and just over half (about 56%) received that diagnosis in adulthood.