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How does your doctor diagnose food allergies?

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If your doctor thinks you might be allergic to a certain food or foods, she may ask you to stop eating them to see if that helps. This is called an elimination diet.

You'll cut out those foods for 2 to 4 weeks and see if you have any allergy symptoms during that time. If you don't, your doctor will ask you to start eating the foods again to see if your symptoms come back. If they do, there's a good chance you're allergic to those foods.

Your doctor also might ask you to do something called an oral food challenge. This should only be done in a medical office by an allergist.

Your doctor will give you very small amounts of the food you may be allergic to and watch for symptoms. If you don't have any, he'll slowly give you larger doses. If you start to have symptoms, he'll stop the test.

From: How Does a Doctor Diagnose an Allergy? WebMD Medical Reference

SOURCES:

American College of Allergy, Asthma and Immunology: "Allergy Testing," "Diagnosing Allergies."

American Academy of Family Physicians: "Colds and the Flu: Tips for Feeling Better."

Cleveland Clinic: "Allergies," "Allergy Overview," "Allergy Tests."

Food Allergy Research and Education: "Food Elimination Diet," "Oral Food Challenges."

Kidshealth.org: "Allergy Testing," "How Do Doctors Test for Allergies?" "Serious Allergic Reactions (Anaphylaxis)."

Reviewed by Sabrina Felson on February 08, 2019

SOURCES:

American College of Allergy, Asthma and Immunology: "Allergy Testing," "Diagnosing Allergies."

American Academy of Family Physicians: "Colds and the Flu: Tips for Feeling Better."

Cleveland Clinic: "Allergies," "Allergy Overview," "Allergy Tests."

Food Allergy Research and Education: "Food Elimination Diet," "Oral Food Challenges."

Kidshealth.org: "Allergy Testing," "How Do Doctors Test for Allergies?" "Serious Allergic Reactions (Anaphylaxis)."

Reviewed by Sabrina Felson on February 08, 2019

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