Definition: A neurobiological disorder, abbreviated as ADHD, AD/HD and recently, ADD/H. Typically children with ADHD have developmentally inappropriate behavior, including poor attention skills, impulsivity, and hyperactivity. These characteristics arise in early childhood, typically before age 7, are chronic, and last at least 6 months. Children with ADHD may also experience problems in the areas of social skills and self esteem.
Attention Deficit Hyperactivity Disorder
By Nancy Schimelpfening, About.com Guide
Updated January 16, 2004
About.com Health's Disease and Condition content is reviewed by the Medical Review Board
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