Is it right after he eats, or a little while after? Either way, it could be something in his diet. Something he has every day, with every meal that he is allergic to. Look at the foods he eats. Even if it's not the same foods or drink, is it something similar... something that contains the same things. Could be dairy. Is he having some sort of dairy with every meal? Could be fruit, though that sometimes will cause a rash, but not always. hope you figure it out.
at 11:04 AM on Sep. 28, 2009