The symptoms of ADD In children, the three major symptoms are hyperactivity, impulsiveness, and inattentiveness. In the American Psychiatric Association's diagnostic manual, the disorder is divided into three classes, depending on whether it involves all three symptoms (the vast majority of cases), the first two only, or mainly the third (relatively uncommon). Hyperactivity is usually the first symptom to be noticed, since it is obvious at an age when not much sustained attention or impulse …showed first 75 words of 1772 total…

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