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What are symptoms of a food allergy?

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Food allergy symptoms may appear almost immediately or up to 2 hours after you've eaten the food (rarely, they appear 4-6 hours later). Symptoms can include:

  • A tingling sensation of the mouth
  • Swelling of the tongue and throat
  • Hives
  • Skin rashes
  • Vomiting
  • Abdominal cramps
  • Trouble breathing
  • Diarrhea
  • A drop in blood pressure
  • Loss of consciousness

From: Food Allergies WebMD Medical Reference

SOURCES: 

News conference, National Institute of Allergy and Infectious Diseases, Dec. 3, 2010.

National Institute of Allergy and Infectious Diseases. 

The Food Allergy Initiative.

The Food Allergy and Anaphylaxis Network.

American College of Allergy, Asthma and Immunology.

Reviewed by Nayana Ambardekar on May 16, 2018

SOURCES: 

News conference, National Institute of Allergy and Infectious Diseases, Dec. 3, 2010.

National Institute of Allergy and Infectious Diseases. 

The Food Allergy Initiative.

The Food Allergy and Anaphylaxis Network.

American College of Allergy, Asthma and Immunology.

Reviewed by Nayana Ambardekar on May 16, 2018

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Which foods most often cause allergic reactions?

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