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Severe contact dermatitis caused by urushiol in Japanese lacquer

Urushiol is a well-known, potent contact allergen that is present in many plants of the genus Toxicodendron, including poison ivy, poison oak, and the lacquer tree. In Europe, contact dermatitis caused by urushiol is rare, and sensitization can usually be linked to previous contact to poison oak or poison ivy in North America. In Asia, contact dermatitis caused by components of lacquer trees is common, including in Japan, where most traditional craftsmen working with lacquer have experienced contact dermatitis caused by urushiol-containing products.