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Peanut allergies are more likely than other childhood allergies to persist into adulthood, but sometimes they do resolve. These British investigators looked for factors that might be helpful in identifying children who have outgrown their peanut allergy.
One hundred twenty children with a convincing history of a nonlife-threatening allergic reaction to peanuts underwent skin testing with peanut antigen and were then challenged with peanut butter or peanuts. Twenty-two children had no allergic symptoms. Fifteen of these children, who ranged in age from 2 to 9 years, were compared with fifteen age- and sex-matched controls who were still allergic. Those who were still allergic to peanuts were more likely to be allergic to other foods than thos…