Abstract
Peanut allergy is generally believed to be permanent.1 In 1998, Hourihane et al2 reported on 22 cases of “resolved peanut allergy,” which was defined as patients with “a clear history of a reaction to peanut” in whom “a formal challenge with peanuts or peanut butter gave negative results.” Fifteen of these 22 patients (“resolvers”) were selected for further study because of the availability of age- and sex-matched control subjects (“persisters”) with positive skin test results and positive ingestion challenge results with peanut.
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