The number of children with attention deficit hyperactivity disorder continues to rise, health officials say. The latest survey says more than one in 10 children has been diagnosed with it. ADHD has been increasing for at least 15 years. Experts think that's because more doctors are looking for ADHD, and more parents know about it. But the new survey suggests the increase may be leveling off a little.
The numbers come from a 2011 survey of parents with children ages 4 to 17 done by the Centers for Disease Control and Prevention. A 2007 survey found 9.5%of kids had been diagnosed with ADHD, which makes it hard for kids to pay attention and control impulsive behaviors. (Read more Centers for Disease Control and Prevention stories.)