A food allergy is an abnormal response to a food by your immune
system. A food allergy may cause itching and swelling; red, raised skin bumps
(hives); wheezing or difficulty breathing; and in rare cases, severe
anaphylaxis, which can be life-threatening.
True food allergies are rare. Most reactions to foods are caused by
food intolerances, reactions to food additives, or food poisoning. Food
allergies are most common in children, but most children outgrow food allergies
within a few years.
Foods that most often cause allergic reactions are:
- Peanuts.
- Tree nuts such as walnuts
and almonds.
- Shellfish and
fish.
- Eggs.
- Wheat.
- Soy
products.
- Milk.