title: Allergic contact urticaria caused by raw prawns and shrimps: three cases.
abstract: Contact urticaria from raw prawns and shrimps was suspected in three housewives with hand eczema who visited our clinic. A practice skin test in which patients stripped the shells from raw prawns and shrimps was positive, but an intradermal skin test with an allergen extracted from a mixture of prawns and shrimps was negative. Results of skin tests with fresh extracts of raw prawns and shrimps were positive. The RAST with a paper disc method with use of a raw prawn and shrimp as antigens was also positive in these three patients. It is evident from the results obtained that some common substances causing a local urticaria exist in raw prawns and shrimps.
mesh_terms: D000328:Adult; D000818:Animals; D033364:Decapoda / Q000276:immunology*; D003877:Dermatitis, Contact / Q000209:etiology* / Q000276:immunology; D005260:Female; D006801:Humans; D008875:Middle Aged; D011852:Radioallergosorbent Test; D011935:Reagins / Q000032:analysis; D012882:Skin Tests
chemical_list: D011935:Reagins