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A 25-year-old female asked:

What is the onset time of an anaphylactic reaction to nuts? i am allergic to tree nuts and ate peanut butter 3 hours ago and feel itchy and tingling.

1 doctor answer5 doctors weighed in
Dr. John Chiu
Allergy and Immunology 59 years experience
In minutes: Most nut reactions occur within minutes although it may rarely be as late as 2 hrs. Delayed reaction can happen from 2-8 hrs later but usually preceded by the immediate reaction and is uncommon. You may consider consulting an allergist since your reaction is not typical. Have you eaten or drunk anything else after having eaten peanut butter?
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Last updated Aug 18, 2015


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