What is egg allergy?

When you have an egg allergy and you eat eggs, your body reacts as if the eggs are trying to cause harm. It fights back by setting off an allergic reaction. A mild reaction may include a few raised, red, itchy patches of skin (called hives). A severe reaction may cause hives all over, swelling in the throat, trouble breathing, or fainting. It can also cause belly pain, nausea, vomiting, or diarrhea. This is called anaphylaxis (say "ANN-uh-fuh-LAK-suss"). It can be deadly.

A good way to prevent an allergic reaction is to avoid the foods that cause it. Eggs might be in salad dressings, meat dishes, and even egg substitutes. An allergy doctor or a dietitian may be able to help you understand which foods might be okay and what to avoid. Learn what to do if you have a reaction.