Anaphylaxis to Oatmeal and Psocid Crisps

  • Delara Babaei Division of Clinical Immunology and Allergy, Department of Medicine, St. Michael’s Hospital, University of Toronto, Toronto, Canada AND Department of Allergy and Clinical Immunology, Mofid Children’s Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  • Peter Vadas Mail Division of Clinical Immunology and Allergy, Department of Medicine, St. Michael’s Hospital, University of Toronto, Toronto, Canada
Keywords:
Food allergy, Oatmeal allergy, Psocid

Abstract

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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Published
2020-04-16
How to Cite
1.
Babaei D, Vadas P. Anaphylaxis to Oatmeal and Psocid Crisps. Iran J Allergy Asthma Immunol. 19(2):200-202.
Section
Case Report(s)