Allergy food challenge

Allergy food challenge

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Credit: PAUL RAPSON/SCIENCE PHOTO LIBRARY

Caption: MODEL RELEASED. Food challenge. 10-year-old boy undergoing a double-blind oral food challenge to test for a food allergy. The boy will eat a variety of foods one by one, while being watched for symptoms of an allergic reaction by a doctor. The foods will include suspected allergens and placebos. Neither the patient nor doctor know which foods are which. Symptoms of an allergic reaction include local or systemic swelling and a rash. More serious reactions can cause a drop in blood pressure and breathing difficulties. This is known as anaphylactic shock and can be fatal in minutes. A food challenge is used after other tests, such as skin tests, to confirm an allergy.

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Keywords: 10, allergen, allergic, allergy, boy, caucasian, child, child nutrition, diagnosis, diagnostic, double-blind, eating, equipment, food, hospital, human, hypersensitive, hypersensitivity, male, medical, medicine, nose clip, oral food challenge, patient, placebo, reaction, ten, test, testing

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