Food allergy

A food allergy is an abnormal immune response to food. The symptoms of the allergic reaction may range from mild to severe. They may include itchiness, swelling of the tongue, vomiting, diarrhea, hives, trouble breathing, or low blood pressure.

This typically occurs within minutes to several hours of exposure.
When the symptoms are severe, it is known as anaphylaxis.
A food intolerance and food poisoning are separate conditions, not due to an immune response.

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Source: Wikipedia · Image: Wikimedia Commons · CC0

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