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Attention-deficit/hyperactivity disorder (ADHD) Mental Health Related Definition

Definition: Attention-deficit/hyperactivity disorder, sometimes called ADHD, is a chronic condition and the most commonly diagnosed behavioral disorder among children and adolescents. It affects between 3 and 5 percent of school-aged children in a 6-month period (U.S. Department of Health and Human Services, 1999). Children and adolescents with attention-deficit/hyperactivity disorder have difficulty controlling their behavior in school and social settings. They also tend to be accident-prone. Although some of these young people may not earn high grades in school, most have normal or above-normal intelligence.

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