4 doctors weighed in:

Up to how long can a body reactic to a food allergy? Immediately upon contact or can there be a reaction as the food contiues to digest?

4 doctors weighed in
Dr. Maziar Rezvani
Internal Medicine - Allergy & Immunology
2 doctors agree

In brief: Varies

Type-i, ige-mediate, food-induced reactions can occur within seconds of an exposure.
Type-iv or cell-mediated food reactions, although usually less clinically severe , can persist for over 24 hours.

In brief: Varies

Type-i, ige-mediate, food-induced reactions can occur within seconds of an exposure.
Type-iv or cell-mediated food reactions, although usually less clinically severe , can persist for over 24 hours.
Dr. Maziar Rezvani
Dr. Maziar Rezvani
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Dr. Steven Machtinger
Internal Medicine - Allergy & Immunology
1 doctor agrees

In brief: From minutes to days

With rare exception immediate reactions occur in minutes to 4 hours after the 1st bite in food allergy.
Delayed reactions occur 10-24 hours after eating. Immediate reactions include lip & tongue, eyelid & face swelling, swollen throat (laryngospasm), hives, nausea, vomiting, hives, asthma a& anaphylaxis. Delayed reactions are eczema and diarrhea. Diarrhea may be intolerance rather than allergy.

In brief: From minutes to days

With rare exception immediate reactions occur in minutes to 4 hours after the 1st bite in food allergy.
Delayed reactions occur 10-24 hours after eating. Immediate reactions include lip & tongue, eyelid & face swelling, swollen throat (laryngospasm), hives, nausea, vomiting, hives, asthma a& anaphylaxis. Delayed reactions are eczema and diarrhea. Diarrhea may be intolerance rather than allergy.
Dr. Steven Machtinger
Dr. Steven Machtinger
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