March 4, 2013 -- Nearly 30% of children with ADHD continue to struggle with the condition as adults, and some may develop other mental health issues, commit suicide, or end up in jail, a new study shows. "We suffer from the misconception that ADHD is just an annoying childhood disorder that’s overtreated," researcher William Barbaresi, MD, of Boston Children’s Hospital, says in a prepared statement. "This couldn’t be further from the truth. We need to have a chronic-disease approach to ADHD as we do for diabetes. The system of care has to be designed for the long haul." The study is published in Pediatrics.

Fivefold Increase in Suicide The study included more than 5,700 adults separated into two groups: One with childhood ADHD and the other without ADHD to serve as a comparison. Out of 367 participants who had childhood ADHD, 232 were followed into adulthood. At age 27, nearly 30% had adult ADHD. According to the researchers, nearly 57% of adults with childhood ADHD had at least one other mental health issue as adults, compared with 35% of adults without childhood ADHD. The most common mental health problems were substance abuse or dependence, antisocial personality disorder, mild forms of mania, generalized anxiety, and major depression. Death from suicide was nearly five times higher among adults with childhood ADHD, the researchers write. Among all 367 adults with childhood ADHD, seven (1.9%) had died, three of them from suicide. Of 4,946 people without ADHD, only 37 (0.7%) had died, five by suicide. Ten people who’d had childhood ADHD (2.7%) were in jail at the time of recruitment for the study.