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is it possible to have a allergic reaction to something five hours later after eating

A 57-year-old member asked:
Dr. Beth Friedland
41 years experience Ophthalmology
Yes, but less likely: The rate at which we react to various allergens in in foods can be very rapid, but can be slowed by absorption in the intestines.
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A 28-year-old female asked:
Dr. John Chiu
Dr. John Chiu answered
56 years experience Allergy and Immunology
Unusual: Allergic reactions to food , except for red meat, usually occurs within 2 hours after ingestion. However I would urge you to see an allergist to get t ... Read More
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A 50-year-old member asked:
Dr. Marvin Den
44 years experience Internal Medicine
Not un usual: An allergic reaction can sometimes be delayed for 4 to 8 hrs after exposure. Would see an allergist to investigate this further.
A 42-year-old member asked:
Dr. Steven Machtinger
43 years experience Allergy and Immunology
Not very long: With food allergies hives either alone or as the first symptom of a more serious life-endangering condition called anaphylaxis typically appear within ... Read More
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A 40-year-old member asked:
Dr. James Sterner
15 years experience Allergy and Immunology
Exercise induced: Food associated anaphylaxis is uncommon, but can happen. Wheat and shrimp are the most common culprits. Patients can eat the food without exercising ... Read More
A 43-year-old member asked:
Dr. Doanh Nguyen, md, faaaai
13 years experience Allergy and Immunology
Food allergy: If the history is persistent that you have difficulty breathing 2-4 hours after eating shrimp and exercise, you might have exercise induced food anaph ... Read More
A 40-year-old member asked:
Dr. Alexander Gorup
28 years experience ENT and Head and Neck Surgery
Could be: Patients are allergic to shellfish. This could be a manifestation of an allergy.
A 47-year-old member asked:
Dr. Linda Green
44 years experience Pediatric Allergy and Asthma
OAS: Oral allergy syndrome occurs when pollen allergic individuals develop an itchy mouth , lips or throat after eating raw fruits or vegetables due to cr ... Read More
A 27-year-old female asked:
Dr. Nayla Mumneh
28 years experience Allergy and Immunology
Throat tightening: Any throat tightening will make you panic, the question is what came first, the tightening or the panic? Depending on what you ate it may be an allerg ... Read More
A 50-year-old member asked:
Dr. James Ferguson
45 years experience Pediatrics
Yes: The dose is a teaspoon of the 12.5 mg/5 ml syrup per 25 lb. given as often as every 4-6 hrs.

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