Definitions for "Attention-deficit/hyperactivity disorder"
A disorder in children marked by difficulties in focusing adaptively on the task at hand, by inappropriate fidgeting and antisocial behaviour, and by excessive non-goal-directed behaviour.
A disorder characterized by restless, inattentive, and impulsive behaviors. go to glossary index
A child whose inattention and hyperactivity-impulsivity cause problems may have this disorder. Symptoms appear before the age of 7 years and are inconsistent with the subject's developmental level and severe enough to impair social or academic functioning.