PREVIOUS QUESTION:

 

NEXT QUESTION:

 

How do doctors test your child for foods that trigger eczema?

ANSWER

A doctor uses tests like:

  • Elimination diets: Skip a food that might be harmful for 10 to 14 days. See if it makes a difference.
  • Food challenges: Add a small amount of the food back in to see if it causes symptoms. You might need to do this in the doctor's office, in case your child reacts.
  • Skin tests: The doctor takes an extract of the food and uses it to scratch your child's skin lightly. If the area swells, it could be reaction. It isn't always accurate.
  • Blood tests: RAST -- a radioallergosorbent test -- can check for special blood cells that signal specific food allergies. It isn't always accurate. Other lab tests can check for cells that trigger swelling.

From: Food and Eczema Flares in Children WebMD Medical Reference

SOURCES:

American Academy of Allergy, Asthma, and Immunology: "Skin Allergy Overview."

American College of Allergy, Asthma, & Immunology: "Eczema in Children."

Asthma and Allergy Foundation of America: "Atopic Dermatitis (Eczema)," "Food Allergies."

Demehri, S. , May 19, 2009. PLOS Biology

Zheng, T. , February 2011. Allergy, Asthma, & Immunology Research

Van Bever, H.  , April 15, 2008.  WAO Journal

University of Iowa Children’s Hospital: "Common Additional Questions."

UpToDate: "Epidemiology, clinical manifestations, and diagnosis of atopic dermatitis (eczema)," "Patient information: Atopic dermatitis (eczema) (Beyond the Basics)," "Role of allergy in atopic dermatitis (eczema)."

World Allergy Organization: “Food Allergy."

Reviewed by Dan Brennan on February 02, 2019

SOURCES:

American Academy of Allergy, Asthma, and Immunology: "Skin Allergy Overview."

American College of Allergy, Asthma, & Immunology: "Eczema in Children."

Asthma and Allergy Foundation of America: "Atopic Dermatitis (Eczema)," "Food Allergies."

Demehri, S. , May 19, 2009. PLOS Biology

Zheng, T. , February 2011. Allergy, Asthma, & Immunology Research

Van Bever, H.  , April 15, 2008.  WAO Journal

University of Iowa Children’s Hospital: "Common Additional Questions."

UpToDate: "Epidemiology, clinical manifestations, and diagnosis of atopic dermatitis (eczema)," "Patient information: Atopic dermatitis (eczema) (Beyond the Basics)," "Role of allergy in atopic dermatitis (eczema)."

World Allergy Organization: “Food Allergy."

Reviewed by Dan Brennan on February 02, 2019

NEXT QUESTION:

How can you help your child avoid eczema food triggers?

WAS THIS ANSWER HELPFUL

"ALEXA, ASK WEBMD"

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.

    This tool does not provide medical advice. See additional information.