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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 exposure.
When these symptoms occur, the allergic reaction is called anaphylaxis, [1] which occurs when IgE antibodies are involved and areas of the body not in direct contact with food become affected and show severe symptoms. [1] [26] Untreated, this can proceed to vasodilation, a low-blood-pressure situation called anaphylactic shock and very rarely ...
Anaphylactoid reaction, non-immune anaphylaxis, or pseudoanaphylaxis, is a type of anaphylaxis that does not involve an allergic reaction but is due to direct mast cell degranulation. [ 10 ] [ 42 ] Non-immune anaphylaxis is the current term, as of 2018, used by the World Allergy Organization [ 42 ] with some recommending that the old ...
Signs and symptoms of anaphylaxis Eczema present at backs of knees. Food allergies usually have an onset from minutes to one to two hours. Symptoms may include: rash, hives, itching of mouth, lips, tongue, throat, eyes, skin, or other areas, swelling of lips, tongue, eyelids, or the whole face, difficulty swallowing, runny or congested nose, hoarse voice, wheezing, shortness of breath ...
Latex allergy symptoms and signs Different symptoms appear with different types of latex allergies. One type causes a rash on the skin; another can cause anaphylaxis, which can result in a ...
Signs and symptoms of anaphylaxis Hives on back. Acute soy allergy can have fast onset (from seconds to one hour) or slow onset (from hours to several days), depending on the conditions of exposure, [1] [3] whereas long-term soy allergy may begin in infancy with reaction to soy-based infant formula. [4]
Anaphylaxis is most often caused by reactions to medication, foods or insect stings, according to the American Academy of Allergy, Asthma and Immunology. Symptoms, which typically start within ...
The Cleveland Clinic notes that although the precise cause of exercise-induced anaphylaxis is still unclear, scientists have identified certain foods that can trigger the reaction in the majority ...