Food Allergies: Causes, Symptoms & What to Do

A food allergy occurs when the body's immune system overreacts to a food. The body produces antibodies that recognize the food as harmful, even though it's not. When the person eats the food again, the antibodies trigger the release of histamine and other chemicals, which cause allergy symptoms.

Symptoms of a food allergy can include:

* Hives

* Swelling

* Difficulty breathing

* Nausea

* Vomiting

* Diarrhea

* Stomach cramps

* Itchy eyes

* Runny nose

* Sneezing

* Anaphylaxis

Anaphylaxis is a severe, life-threatening reaction that can occur within minutes of eating the allergen. Symptoms of anaphylaxis include:

* Difficulty breathing

* Swelling of the throat

* Dizziness

* Loss of consciousness

If you think you may have a food allergy, it's important to see a doctor to get tested. The doctor can determine if you have a food allergy and recommend ways to manage it.