How would you react if your child did this to you?

There isn't anything you can do, With all the disorders he has. But he may grow out of this attitude. There is also a chance he won't. Only time will tell, but you may want to see if there is anything that will make him calmer, like getting him something he likes (probably food wise) and doing every ONCE IN A WHILE (meaning not everyday though you probably knew that :P) then you can have a few minutes of hopefully peace and quiet.