While I agree with all or almost all of the above statements. Two things bother me. The first is that he had some very scary events between 1 and 2 years old. The second is that “during the last 2 to 3 weeks he has changed a lot” ADHD does not just suddenly come on like that. My question would be, are there things in his home or school environment that is causing these problems? Specifically, with the recent change – what also changed in his normal routine? His sleep patterns are not that unusual for a young kid who perhaps has not had proper sleep training techniques. But, to me, the other things point to some outside factor besides adhd.