Anaphylaxis caused by artisanal honey in a child: a case rep
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Honey is a rare cause of food allergy, especially in children, but it can cause severe systemic allergic reactions. In the pediatric age group, only a few cases have been reported in the literature. Honey allergy may be caused by pollen content or bee-derived proteins. A role for Compositae has been suggested among pollen allergens. Allergology workup of a patient with suspected honey allergy is not well defined. Here authors describe a rare case of anaphylaxis in a 5-year-old boy, sensitized to Compositae pollen (ragweed and mugwort), after the ingestion of artisanal honey.

The Slavic patient was referred to hospital emergency department for generalized urticaria and breathing impairment. All the symptoms occurred approximately 30 minutes after the ingestion of a meal containing salmon and artisanal honey. The allergology workup revealed that a skin prick-by-prick test with the implicated artisanal honey was positive, while a variety of different commercial honey and salmon products yielded negative results.

Skin prick test and serum-specific immunoglobulin E (IgE) results were also positive for Compositae pollen (ragweed and mugwort). Patients sensitized to weed pollens who ingest bee products may experience an immediate allergic reaction because of the cross-reaction between weed pollens and Compositae bee product pollen. In this case, primary sensitization may be due to airborne Compositae pollen. Commercial honey is heavily processed due to pasteurization and filtration, which removes most of the pollen.

These observations highlight the role of Compositae pollen in the observed allergic reaction and suggest that the different pollen content in the artisanal honey relative to commercial honey was responsible for the allergic reaction in our patient.

This is the first reported pediatric case of honey-induced anaphylaxis in a child under 6 years of age sensitized to Compositae pollen. Pediatricians should be aware of the potential risk of severe allergic reactions upon ingestion of honey and bee products, especially in patients sensitized to weed pollens. To diagnose honey allergy, obtaining a proper clinical history is essential. In addition, skin prick-by-prick tests are helpful, and may represent a simple method to screen for honey allergy in patients sensitized to Compositae pollen, in light of the potential risk.

Source: https://jmedicalcasereports.biomedcentral.com/articles/10.1186/s13256-021-02823-4
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