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A 28-year-old female asked:

if you breakout in hives and think it might be food, how far back should you track your food back to? or how long does it take to react?

1 doctor answer4 doctors weighed in
Dr. Justin Greiwe
Allergy and Immunology 12 years experience
Minutes to 2 hours: Acute urticaria (hives) and angioedema (swelling) are the most common cutaneous manifestations of food allergy. Food hypersensitivity reactions are classically rapid in onset, typically beginning within a few minutes to 2 hours from the time of ingestion.

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Last updated Feb 10, 2015
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