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Shellfish allergy
Allergy to shellfish is quite common and people who are sensitive can react to a number of different types of shellfish, such as shrimps, prawns, lobsters, crabs, crayfish, oysters, scallops, mussels and clams.
People who are allergic to one type of shellfish often react to other types. Shellfish allergy can often cause severe reactions, and some people can react to the vapours from cooking shellfish.
Pre-packed food sold in the UK, and the rest of the European Union, must show clearly on the label if it contains crustaceans (these include lobster, crab, prawns and langoustines) or molluscs (including mussels, scallops, oysters, snails, whelks and squid).
