adult ADHD 8 million adults are all related to each other 20 percent Adult ADHD (attention deficit/hyperactive disorder) ADAA 4 percent Anxiety and Depression Association of America: Adult ADHD 40 percent 8 million adults in the U.S. that are diagnosed with 4 percent el TDAH en los adultos 20 percent adult ADHD about 8 million 4 percent one of the eight million 50 percent Adult ADHD likely risk 50 percent 50 percent 60 percent 8 million adults Adult ADHD (Attention-Deficit/Hyperactive Disorder ... about 60 percent 4 percent Anxiety and Depression Association of America