title: Contact urticaria to O-phenylphenate.
abstract: Contact urticaria is a form of immediate hypersensitivity reaction that is being noted with increasing frequency. This report illustrates an unusual presentation of contact urticaria in the form of an immediate reaction to a component of plaster cast material. The substance involved was ortho-phenylphenate, a preservative. It has not been previously implicated in a contact urticaria reaction.
mesh_terms: D000328:Adult; D001713:Biphenyl Compounds / Q000009:adverse effects*; D003877:Dermatitis, Contact / Q000209:etiology*; D004342:Drug Hypersensitivity / Q000209:etiology*; D005260:Female; D006801:Humans; D006969:Hypersensitivity, Immediate / Q000139:chemically induced*; D014581:Urticaria / Q000139:chemically induced* / Q000276:immunology
chemical_list: D001713:Biphenyl Compounds; C004369:2-phenylphenol