He can eat tacos, spaghetti, meatloaf, etc. just fine. But when he eats a walmart frozen burger cooked on the grill or on the stove he breaks out in hives about 5-7 hours later. Hives start around buttocks and groin and spread quickly. This has happened over and over lately.
There is no list of preservatives on the box, it just says 100% pure beef.


