Can A Peanut Allergy Be Outgrown?
Peanut allergy typically starts in childhood. It usually is a life-long allergy. With this said, approximately 20% of patients may outgrow a peanut allergy over time. Based on past clinical history, allergy testing can be repeated.
An oral food challenge (OFC) may be done to see if the allergy was outgrown or not. It is the most effective way to rule out a current food allergy. It may be considered if the patient has a small skin prick test reaction to peanuts. It can also be done if there is low specific IgE to peanut with blood testing. These results suggest a low likelihood of clinical peanut allergy. Newer forms of blood IgE testing can help identify patients who are good candidates for an OFCs. All food challenges should be done in an allergist’s office with trained staff. They are equipped to recognize and treat allergic reactions.
John M. James, MD, is a board-certified allergist. He is also President of Food Allergy Consulting and Education Services, LLC. He has worked as a medical specialist in the field of allergy, asthma, and immunology for over 30 years. Dr. James received his bachelor’s degree from the University of Arkansas and his Doctor of Medicine degree from the University of Tennessee. He is board certified by the American Board of Allergy and Immunology.
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