Various foods can induce anaphylaxis. However, mushrooms-induced anaphylaxis has not been reported in Korea. We report a patient with past anaphylactic episode caused by mushroom ingestion, confirmed by the skin test and specific IgE antibody to mushrooms. A 17-year-old girl with asthma was referred to our department due to itchy throat, dyspnea, and urticaria within 10 minutes after ingestion of a soup containing Oyster mushrooms. She presented an itching throat after ingestion of cooked mushrooms 3 years before the visit. She had an elevated serum IgE level (205 kU/L) and was sensitized to house dust mites. Skin prick tests with mushroom extracts showed a strong positive on Oyster and King Oyster mushrooms as well as Pyogo mushroom. The specific IgE antibody to each mushroom measured by enzyme-linked immunosorbent assay showed significant positive results to Oyster and Pyogo mushroom extracts, but was negative on King Oyster mushroom. We educated her to avoid eating Oyster and Pyogo mushrooms for preventing recurrence, whereas we couldn't perform oral challenge tests.
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