Occasionally, a seemingly straightforward history of food-induced anaphylaxis may prove to be misleading. Both patients and their physicians have a tendency to attribute the cause of an allergic reaction to the most conspicuous ingredient that had been ingested while overlooking less likely causes. Here, we describe a patient whose history pointed to oatmeal allergy, but skin prick tests to oats and serologic testing for oat-specific IgE were negative. Ultimately, we found that the oatmeal had been contaminated with an allergenic insect, Psocid of the order Psocoptera.
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http://dx.doi.org/10.18502/ijaai.v19i2.2773 | DOI Listing |
J Dermatol
January 2025
Department of Dermatology, Toho University Ohashi Medical Center, Tokyo, Japan.
A 52-year-old man presented to our department with generalized erythema, watery stools, and vomiting 30 min after ingesting coconut, oatmeal, and vegetable juice. On arrival, his blood pressure was 120/79 mm Hg, heart rate was 126 beats per min, blood oxygen saturation was 96%, and lip cyanosis was observed. The patient experienced diffuse redness throughout the body and was diagnosed as having severe anaphylaxis.
View Article and Find Full Text PDFIran J Allergy Asthma Immunol
April 2020
Division of Clinical Immunology and Allergy, Department of Medicine, St. Michael's Hospital, University of Toronto, Toronto, Canada.
Occasionally, a seemingly straightforward history of food-induced anaphylaxis may prove to be misleading. Both patients and their physicians have a tendency to attribute the cause of an allergic reaction to the most conspicuous ingredient that had been ingested while overlooking less likely causes. Here, we describe a patient whose history pointed to oatmeal allergy, but skin prick tests to oats and serologic testing for oat-specific IgE were negative.
View Article and Find Full Text PDFRev Alerg Mex
September 2020
Instituto Conmemorativo Gorgas de Estudios de la Salud, Departamento de Investigación en Entomología Médica, Panamá, Panamá.
Background: Oral anaphylaxis due to food intake contaminated with mites (OMA, oral mite anaphylaxis) is an allergic reaction that can represent life risk for patients. There are reports of cases from different parts of the world and they involve mainly processed foods based on wheat flour contaminated with mites of several families of the Astigmatina cohort. However, it remains as a little known and difficult to diagnose syndrome.
View Article and Find Full Text PDFJ Allergy Clin Immunol Pract
October 2016
Department of Allergy, Immunology and Respiratory Medicine, Alfred Hospital and Monash University, Melbourne, Australia; Department of Immunology, Monash University, Melbourne, Australia. Electronic address:
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