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2818701 
Journal Article 
Allergic Contact Dermatitis to White Pine Sawdust 
Mackey, SA; Marks JG Jr 
1992 
Yes 
Archives of Dermatology
ISSN: 0003-987X
EISSN: 1538-3652 
NIOSH/00212017 
128 
12 
A case of allergic contact dermatitis resulting from occupational contact with white pine sawdust was described. A 65 year old male cabinetmaker who had been working with pine wood since 1975 developed a pruritic dermatitis on exposed skin of the head, neck, arm, hands, and upper trunk beginning in 1984. His symptoms decreased when he had no contact with white pine wood, and increased when he camped near pine trees. The patient was patch tested with white pine, birch, and oak sawdust, a standard allergen series, and a series of 24 plant antigens. The patient reacted to 2,6-dimethoxy-1,4-benzoquinone (530552) (DMBQ), pine sawdust, chloroxylenol (88040), epoxy resin, and p-chloro-m-cresol (59507). He showed a questionable reaction to colophony. The authors conclude that the patient is allergic to sawdust of white pine wood that he used in his cabinet making. His positive reaction to DMBQ is relevant to cabinet making since DMBQ is found in wood while his allergy to epoxy resin is associated with his hobby of building model airplanes. The patient has avoided contact with white pine and his dermatitis has improved markedly.