Thanks so much for your replies!

We actually bought him a squeezy ball last week to use at school (that is the place where he struggles with emotions the worst) and he said it did help him! YAY!!!

I have spoken to him about what he's feeling, how it hurts other children when he acts out, would he like someone to hit him if they were angry, etc... He knows remorse, because he has told me how sorry he is after he has hit someone, but at the time, he can't understand to use his words or walk away, he just snaps!

I am going to check out the website for what preservatives/additives to steer clear of, thanks for that suggestion!

We are taking him to a behaviourial specialist next month. He may not have a disorder of any type but again he may. Whatever happens, this doctor should be able to help us in helping him to deal with his anger.

Thanks again ladies for your advice and suggestions.