I was warned to ensure my 6trs old so stays off a lot of thing, like seafoods, all biscuit, corn products, milk, all colored drinks, can only take sprite and 7up, I could not do it and he now tolerates all so I really didn't believe there was allergies until last night when I ate just 1 crab, It isn't my first time but i was rushed to the hospital cos it was an emergency. Sever stomach ache, feltlije throwing up, body itch from scalp to sole, with all parts swollen and choking. My children were just praying to God that thier mum should not die. It was really bad but I tank God I'm better now, on 5 days injection and never I go near crab again, I'm even scared of shrimps too