Food Allergies and Your Skin

A food allergy occurs when your immune system responds defensively to a specific food protein that, in reality, is not harmful to the body.

The first time you eat the offending food, the immune system responds by creating specific disease-fighting antibodies (called immunoglobulin E or IgE). When you eat the food again, the IgE antibodies spring into action, releasing large amounts of histamine in an effort to expel the "foreign invader" from the body. Histamine is a powerful chemical that can affect the respiratory system, gastrointestinal tract, skin, or cardiovascular system.

What Are the Symptoms of a Food Allergy?


Which Foods Most Often Cause Allergic Reactions?

There are eight foods that cause over 90% of food allergies in children -- milk, eggs, peanuts, wheat, soy, and tree nuts (such as walnuts, pecans, and almonds).

In adults, 90% of food allergies are caused by peanuts, tree nuts, fish, and shellfish.

How Are Food Allergies Diagnosed?




How Are Food Allergies Treated?

The best way to cope with a food allergy is to strictly avoid the foods that cause a reaction. Mild reactions often will subside without treatment. For rashes, antihistamines can help reduce itching and may also relieve congestion and other symptoms.

For more serious reactions, corticosteroids, such as prednisone, will help to reduce swelling. In life-threatening situations, an epinephrine injection can immediately begin to reverse symptoms and is the only effective treatment option. If a doctor has prescribed an auto-injector for you, carry two at all times.


How Can I Be Prepared for Food Allergies?

Once you and your doctor have determined which foods you should avoid, stay away from them. However, it is important to maintain a healthy, nutritious diet. Ask your doctor to recommend foods that will provide the necessary nutrients.


If you are prone to allergic reactions, ask your doctor to prescribe an epinephrine injection kit and carry two with you at all times.




American Academy of Allergy, Asthma and Immunology.

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