Abstract

Although lysozyme is classified as a minor egg allergen, it can cause clinically significant allergic reactions in sensitized pediatric patients. We present the case of a child with egg allergy who developed symptoms after consuming cheeses containing lysozyme. A review of the literature indicates that lysozyme, which is also present in various foods, beverages, and medications, can trigger reactions in individuals sensitized to egg. Therefore, accurate and clear labeling is essential to avoid accidental exposure.

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Authors

Arianna Giannetti - Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy

Lorenza Parini - Department of Medical and Surgical Sciences (DIMEC), University of Bologna

Federica La Ciacera - Università degli Studi di Cagliari

Angela Miniaci - Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy

Marcello Lanari - Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy

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Copyright

Copyright (c) 2025 Italian Journal of Pediatric Allergy and Immunology

How to Cite
Giannetti, A., Parini, L., La Ciacera, F., Miniaci, A., & Lanari, M. (2025). Allergic reactions to lysozyme: a case reports and literature review. Italian Journal of Pediatric Allergy and Immunology, 39(3). https://doi.org/10.53151/2531-3916/2025-1511
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