A child must have six of the symptoms of inattention or six of those on the hyperactivity- impulsivity list to be diagnosed with ADHD.
After reading these lists, many people could say: "Wait a minute, I'm like that." or "My child often acts that way." In fact, everyone exhibits these traits at one time or another. For a true diagnosis other criteria must be present. For example, the child must display these symptoms in two or more settings, must show significant impairment at school, at home or with other people, and certain other mental disorders must be ruled out.