Sensitization to dimethyl fumarate with multiple concurrent patch test reactions

Contact Dermatitis
K LammintaustaMagnus Bruze

Abstract

Chairs and sofas imported from China to Europe were shown to contain dimethyl fumarate (DMF), a sensitizing, volatile chemical. Many of the sensitized patients also had positive patch test reactions to acrylates. To analyse the occurrence and strength of DMF sensitization and the appearance of concomitant reactions. Patch testing with DMF in concentrations of 0.1-0.00001% was carried out in 37 patients. Diethyl fumarate (DEF), diethyl maleate (DEM), dimethyl maleate (DMM), ethyl acrylate (EA), methyl acrylate (MA), and methyl methacrylate (MMA) were also tested with a dilution series at equimolar concentrations. The lowest concentration of DMF eliciting a reaction varied between 0.0001% and 0.1% and all but four patients reacted concurrently to DEF. DEM elicited positive patch test reactions in 21/37 patients and DMM reactions were seen in all 9 patients tested. EA elicited positive reactions in 13/37 patients and a positive MA reaction was seen in 7/37 patients, 2 of whom also reacted to MMA. The strength of the sensitization to DMF showed variation and concurrent reactions were common. Concurrent reactions to (meth)acrylates were seen in patients, who reacted to lower (0.001% or less) DMF concentration probably elicited by cr...Continue Reading

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Citations

Mar 4, 2011·Bulletin of Environmental Contamination and Toxicology·Patrizia StefanelliRoberto Dommarco
Sep 15, 2011·International Journal of Dermatology·Angelo Massimiliano D'ErmeMassimo Gola
Sep 15, 2015·Dermatitis : Contact, Atopic, Occupational, Drug·Anton C de Groot
May 16, 2015·Archives of Toxicology·Thomas Armin FrohweinMaximilian Schreiner

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