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Frequency. ~6% (developed world) [1] [2] 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 ...
There are specific diagnostic tests for certain food intolerances. Signs and symptoms. Food intolerance is more chronic, less acute, less obvious in its presentation, and often more difficult to diagnose than a food allergy. Symptoms of food intolerance vary greatly, and can be mistaken for the symptoms of a food allergy.
A radioallergosorbent test (RAST) is a blood test using radioimmunoassay test to detect specific IgE antibodies in order to determine the substances a subject is allergic to. This is different from a skin allergy test, which determines allergy by the reaction of a person's skin to different substances. [citation needed]
The Asthma and Allergy Foundation of America ( AAFA) is the leading patient organization for people with asthma and allergies and the oldest asthma and allergy patient group in the world. AAFA is dedicated to saving lives and reducing the burden of disease for people with asthma, allergies, and related conditions through research, education ...
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In some patients food allergy and food intolerance can coexist, with symptoms such as asthma, eczema and rhinitis. In such cases the elimination diet for food intolerance is used for dietary investigation. Any foods identified by SPT or RAST as suspect should not be included in the elimination diet.