Food Allergy Symptoms

Food Allergies Symptoms

What is a food allergy?

A food allergy develops when the body’s immune system has an unusual reaction to a protein within that specific food.

Food allergy reaction can vary from severe and life threatening to mild and may appear as just a small rash.

You get two different types of food allergies; the one called IgE-mediated food allergy, this allergy has symptoms that usually occur within a few seconds or two hours of eating the culprit food.

The other type of food allergy is called non-IgE-mediated food allergy or “delayed food allergies", this type of allergic reaction takes longer for symptoms to arrive, hours or even days. Multiple food allergies are also common. IgE allergies are more common than non-IgE allergies. Food allergies in children are often found to be both IgE and non-Ige.

Most Common Food Allergies

Peanuts, tree nuts, milk, eggs, wheat, soy, fish, seafood allergy.



Symptoms of food allergy / Signs of food allergies


Common IgE Mediated Symptoms of Food Allergies Include:

•    Swelling of lips, face, eyes, tongue and throat.

•    Wheezing, coughing, difficulty breathing and congestion.

•    Change in the voice (croaky)

•    Teary eyes are one of the common symptoms of a food allergy.

•    Nausea, vomiting and abdominal pain.

•    Hives, raised red food allergy rash or eczema. (eczema and food allergies are often closely linked)

•    Feeling faint and lightheaded.

•    Diarrhoea.

•    Food allergy symptoms may include anxiety and confusion.  

•    Anaphylaxis in severe cases. Anaphylaxis may include symptoms such as rapid pulse, loss of consciousness, drop in blood pressure as well as the above symptoms of allergies. Untreated anaphylaxis can lead to coma or even death.

Non-IgE symptoms

Food allergy statistics show that Non-IgE allergies usually only include less obvious symptoms such as eczema like symptoms, cancer sores, food allergy inflammation, heartburn, diarrhoea, constipation, blood or mucus in the stools and colic like symptoms in babies. Read more on food allergies in babies.

Exercise Induced Food Allergies

These food allergies are triggered by exercise. This is usually characterised by feeling lightheaded or itching almost immediately after exercise. If you think you have this type of allergy, it would be best to refrain from eating for at least three hours before exercise, unless you know which food is causing the reaction, in which case you just avoid that culprit food.

Pollen Food Allergies

This occurs in people who are already allergic to certain pollens. For example, if you are allergic to ragweed, you may also have an allergic reaction to melons. Cooking fruits can prevent this reaction.

Diagnosing Food Allergies

If you think you have a food allergy, you can get your doctor to do food allergy tests on you to make sure that the problem does not lie elsewhere. A blood test for food allergies is usually most reliable.

Food Allergy Forums

Visit the food allergy forum IFIC

Top of food allergy symptoms page


Other pages on remedies for skin in connection with this page on food allergy symptoms

* Gluten allergy

* Itching all over

* Eczema diet

* Wheat allergies

* Soy allergy symptoms

* Sugar allergies

* Vitamins for hair loss

* Vitamins for hair growth

* Peanut allergies

* Shellfish allergy symptoms

* Natural hair dye

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