Theres a diet called the free food diet, its cutting out everything that can cause problems ie tomatoes oranges coloured toothpaste etc.

You then after a few weeks of this try to introduce food to try and find out what is causing the problems.

If I could go back to the start with one of my sons I would stop all meds and use the word NO and mean it. I would put him in his room everytime he messed up with me and I would talk and listen to him more as well rather than just the Drs.

I would enter him into as many clubs and sports as I could, and take advantage of family members (that I trust) to take him out to places ie skate parks or museums you name it take him to it.

I would also try to keep him seperate from the other children as much as possible as well and unclutter his bedroom. Take out the things he really does not need in there toys he dosnt play with.

I would play soft music in the house as often as I could cope with it and have a music station in his room so he could go to bed with the radio on (if he has sleeping problems)

I would only attack one thing at a time with him like the hitting and when I had that under control I would then move onto somthing else. I wouldnt worry so much about other people either.

I would put him in a different school to his siblings so they get a complete break from him as they deserve time to themselves too.