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A Case of α-Gal-Unrelated Red Meat-Induced Urticaria Treated by Omalizumab
A 70-year-old healthy woman was referred to our hospital for chronic urticaria. She did not have a history of allergy, asthma, and rhinitis. She was initially diagnosed with α-gal-related urticaria based on an episode of delayed-type urticaria after eating red meat. The results of the intracutaneous...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
S. Karger AG
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8460939/ https://www.ncbi.nlm.nih.gov/pubmed/34720914 http://dx.doi.org/10.1159/000518421 |
Sumario: | A 70-year-old healthy woman was referred to our hospital for chronic urticaria. She did not have a history of allergy, asthma, and rhinitis. She was initially diagnosed with α-gal-related urticaria based on an episode of delayed-type urticaria after eating red meat. The results of the intracutaneous allergen test for beef and pork were negative. Fluorenzyme immunoassays specific for IgE against α-gal, beef, and pork were also negative. She was diagnosed with an α-gal-unrelated red meat allergy following the reproduction of urticaria by a food challenge test. The patient was unresponsive to several drugs, including antihistamines or immunosuppressants. However, omalizumab administration suppressed her symptoms. KEY CLINICAL MESSAGE: The diagnosis of red meat allergy may require a repeatability test by consuming red meat even though serum α-gal IgE antibody might be negative. The α-gal-unrelated red meat urticaria may be responsive to omalizumab. |
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