All signs do not have to be present for a diagnosis of attention-deficit/hyperactivity disorder (ADHD). However, 6 or more signs of inattention or of hyperactivity and impulsivity must always be present for a diagnosis (or 6 from each group to diagnose the combined type of ADHD). Signs must be present in two or more situations (for example, at home and at school) and must interfere with social or academic functioning. Signs of inattention:
Signs of hyperactivity and impulsivity:
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