Exercise‐induced allergic reactions after achievement of desensitization to cow's milk and wheat
- 19 February 2021
- journal article
- research article
- Published by Wiley in Pediatric Allergy and Immunology
- Vol. 32 (5), 1048-1055
- https://doi.org/10.1111/pai.13479
Abstract
Background We have previously reported that more than half of the patients who achieved desensitization after wheat rush oral immunotherapy (OIT) developed exercise‐induced allergic reaction on desensitization (EIARD). However, data on EIARDs after slow OIT are lacking. Therefore, this study aimed to investigate the results of exercise provocation tests (EPTs) in patients after slow OIT for cow’s milk and wheat allergies. Methods This was a retrospective chart review of 87 EPTs in 74 patients. The EPTs were performed in patients who were desensitized to at least 6,600 mg cow’s milk protein or 5,200 mg wheat protein with slow OIT and were identified to be at a high risk of EIARDs. EPTs were performed after ingestion of the maximum desensitization dose. The patients’ clinical characteristics and symptoms were analyzed. Results The EPT results were positive for cow’s milk in 49% (21/43) of the patients and for wheat in 48% (15/31) of the patients. There was no significant difference in the clinical characteristics between the EIARD‐positive and EIARD‐negative groups. The specific IgE (sIgE) levels before OIT and the reduction rates of sIgE before and after OIT did not correlate with the outcomes of the EPTs. Among the EIARD‐positive patients, 13 patients (cow’s milk, n=7; wheat, n=6) underwent a second EPT, and the EIARD disappeared in 8 patients (cow’s milk, n=4; wheat, n=4). Conclusion EIARDs were observed after slow OIT for cow’s milk and wheat. Further research into the predictive factors of EIARDs in these patients is needed to understand its clinical manifestations.Keywords
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