ACAAI: Allergic to Penicillin? Maybe Not

Posted on Sat, Nov 08, 2014
ACAAI: Allergic to Penicillin? Maybe Not

Majority of people reporting allergy showed no evidence in skin tests

FRIDAY, Nov. 7, 2014 (HealthDay News) -- A majority of people who believe they are allergic to penicillin may not be, according to two studies presented at the annual meeting of the American College of Allergy, Asthma & Immunology, held from Nov. 6 to 10 in Atlanta.

In one study, 94 percent of 384 people who believed they were allergic to penicillin tested negative for penicillin allergy.

In the second study, penicillin skin testing was performed on 38 people who believed they were allergic to the antibiotic, and all of them tested negative for such an allergy.

"A large number of people in our study who had a history of penicillin allergy were actually not allergic," Thanai Pongdee, M.D., lead author of the first study, said in an ACAAI news release. "They may have had an unfavorable response to penicillin at some point in the past, such as hives or swelling, but they did not demonstrate any evidence of penicillin allergy at the current time."

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