This article is part of MPR’s coverage of the American College of Allergy, Asthma & Immunology 2020 Annual Scientific Meeting, being held virtually from November 13-15, 2020.

Larger skin flare results in pediatric patients correlated to failing certain oral food challenges, but were not predictive of requiring epinephrine, according to the results of a recent study presented at the American College of Allergy, Asthma & Immunology (ACAAI) Annual Scientific Meeting.

Researchers conducted a retrospective review of egg, cow’s milk, and peanut oral food challenge results at a large pediatric institution during a 3-year period. Mann Whitney testing was used to compare flare size results from passing and failed oral food challenges.

Of the 752 oral food challenges reviewed, the overall pass rate was 55%. When skin flare size was evaluated, failed oral food challenges had significantly larger flares than passing oral food challenges (median failed, 20mm vs median passed, 12mm; P <.0001). Furthermore, the flare size appeared consistent between individual foods (egg: failed, 17.5mm vs passed, 11.5mm; P <.0001; cow’s milk: failed, 20mm vs passed, 12 mm; P =.0007; and peanut: failed, 20mm vs passed, 14mm; P <.0001). However, flare size was not associated with requiring epinephrine treatment. 

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“[Skin prick test] flare size were significantly larger in children who failed [oral food challenge] to egg, cow’s milk, and peanut,” the researchers wrote. “Flare size, in addition to wheal, may serve as a valuable predictive indicator for [oral food challenge] outcomes.”

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Harrison H, Spergel J, Capucilli P. Significance of skin prick test flare measurements in predicting oral food challenge outcomes. Presented at: the American College of Allergy, Asthma & Immunology (ACAAI) Annual Scientific Meeting (Virtual Experience); November 13-15, 2020. Abstract P304.

This article originally appeared on Pulmonology Advisor