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Family Allergy & Asthma Clinic Denton, Flower Mound
Family Allergy & Asthma Clinic Denton, Flower Mound
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Allergy and Asthma Family Care North Texas Blog

Can I Outgrow a Penicillin Allergy?

  • September 25, 2019
  • | By FAAC
  • |  0 Comments

Penicillin is one of the most commonly reported drug allergies. However, at least 80% of people who were penicillin allergic will no longer be allergic 10 years after the reaction. In fact, 95% of people labeled allergic turn out to have negative testing and can take penicillin again without problems. Simply avoiding penicillin anyway may sound simple, but there are risks:

  • You may be prescribed other antibiotics which don’t work as well for the infection you have
  • These other antibiotics tend to cause more adverse reactions, such as kidney injury, diarrhea, or further infections with drug-resistant bacteria

These problems are so serious and widespread that the Centers for Disease Control and Prevention (CDC) recommends a thorough evaluation of a suspected penicillin allergy before prescribing a broad-spectrum antibiotic.

Evaluation of a penicillin allergy first involves taking a history to find out when you had a reaction and what the symptoms were. Depending on your history, an allergist/immunologist may recommend further testing.

Skin testing for penicillin allergy is very helpful to detect a sensitization to penicillin. Based on the results, your provider may recommend a drug challenge.  Once you pass a drug challenge, you are cleared of your penicillin allergy.

For more information: https://www.aaaai.org/conditions-and-treatments/library/allergy-library/penicillin-allergy

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