Occupational buckwheat allergy as a cause of allergic rhinitis, asthma, contact urticaria and anaphylaxis—An emerging problem in food‐handling occupations?

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  • Soile Jungewelter
    Occupational Medicine Finnish Institute of Occupational Health (FIOH) Helsinki Finland
  • Liisa Airaksinen
    Occupational Medicine Finnish Institute of Occupational Health (FIOH) Helsinki Finland
  • Maria Pesonen
    Occupational Medicine Finnish Institute of Occupational Health (FIOH) Helsinki Finland

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<jats:title>Abstract</jats:title><jats:p>Buckwheat is a known, though uncommon, allergen in occupational settings. It has recently gained popularity as healthy food and as an ingredient in gluten‐free diets. We describe a series of six patient cases with occupational immediate allergy to buckwheat. Three cooks, two bakers, and a worker in a grocery store were occupationally exposed to buckwheat flour and developed immediate allergy to buckwheat, which was confirmed by skin prick testing and measurement of specific immunoglobulin E antibodies. Four of the patients were diagnosed with occupational asthma, four with occupational rhinitis, and two with occupational contact urticaria caused by buckwheat. Three of the six patients suffered anaphylaxis as consequence of their occupational buckwheat allergy after ingestion of food that contained buckwheat. The high rate of life‐threatening reactions, together with a short exposure time to buckwheat before sensitization occurred in these cases, highlights the importance of a detailed occupational history and a high index of suspicion for occupational food allergens.</jats:p>

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