A neurobiological disorder that arises in early childhood, typically before age seven, and is characterized by developmentally inappropriate behavior including poor attention skills, poor impulse control and hyperactivity. Children with AD/HD have difficulty focusing (picking something on which to pay attention), sustaining focus (paying attention for as long as is needed), and shifting focus (moving attention from one thing to another); tend to fidget, talk incessantly or be constantly ?on the move?; and speak and act on impulse rather than waiting their turn. Symptoms typically worsen in situations like the classroom that require sustained focus and self-application, and may be absent when the child is in a new or one-to-one situation.
Taxonomy Code: YF-180.600-05
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