Four million US children have ADHD and most have other disorders.

Data from the 2007 National Survey of Children's Health of kids between 6 and 17 years with parent-reported diagnosis of attention deficit/hyperactivity disorder (ADHD) reveals they were far more likely than children without ADHD to have other disorders such as learning disabilities, behavior disorders and depression. Only one-third of those with ADHD had no other cormorbidities. Those with ADHD were also significantly more likely to repeat a grade and have school-related problems.

PositiveTip: If you suspect your child has ADHD, ask your physician to do a thorough diagnosis--then work closely with health care providers to provide the best treatments.