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Airborne occupational allergic contact dermatitis from champignon mushroom
L Kanerva1, T Estlander, R Jolanki
1From the Section of Dermatology, Finnish Institute of Occupational Health, Helsinki, Finland.
Background:
Allergic contact dermatitis from mushrooms has only seldom been reported.
Objectives:
We report on a mushroom picker who developed skin symptoms from occupational exposure to the mushroom champignon.
Methods:
Conventional patch testing and prick testings were performed.
Results:
Erythema and vesicular edemic dermatitis appeared around the eyes, on the cheeks, around the nose, and around the lips of a 31-year-old woman who had been involved in the commercial production of champignons for 5 years. Prick testing to champignon was negative, but patch testing with raw champignon provoked a 2+ allergic reaction and was negative in the controls.
Conclusion:
Our patient had been occupationally sensitized from exposure to champignon. The allergen is not known but may be a low-molecularweight chemical or a protein present in the champignon.