7 doctors weighed in:
If given a skin test, will reactions from "oral allergies" be the same as a true food allergy?
7 doctors weighed in

Dr. Steven Machtinger
Internal Medicine - Allergy & Immunology
3 doctors agree
In brief: No
If you have an itchy mouth & throat after eating apples but no other symptoms & you have a negative skin or blood test to apple & a positive test to birch your allergist will probably call it oral allergy syndrome (oas).
If the test is positive for apple then we'll call it apple allergy. Usually people with apple allergy cannot eat cooked or baked apples while those with oas can.

In brief: No
If you have an itchy mouth & throat after eating apples but no other symptoms & you have a negative skin or blood test to apple & a positive test to birch your allergist will probably call it oral allergy syndrome (oas).
If the test is positive for apple then we'll call it apple allergy. Usually people with apple allergy cannot eat cooked or baked apples while those with oas can.
Dr. Steven Machtinger
Dr. Steven Machtinger
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Dr. Alex Martinez
Internal Medicine - Allergy
2 doctors agree
In brief: No
Oral allergy syndrome refers to itching after eating foods distantly related to airborne allergens.
For example, people allergic to birch tree pollen get mouth itching when they eat apples. Food tests reveal "true" reactions (worrisome since they sometimes become severe). To uncover oral allergies (a more "local" reaction that doesn't become severe), you have to test for airborne allergens.

In brief: No
Oral allergy syndrome refers to itching after eating foods distantly related to airborne allergens.
For example, people allergic to birch tree pollen get mouth itching when they eat apples. Food tests reveal "true" reactions (worrisome since they sometimes become severe). To uncover oral allergies (a more "local" reaction that doesn't become severe), you have to test for airborne allergens.
Dr. Alex Martinez
Dr. Alex Martinez
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1 comment
Dr. Michael P Vaughn
Keep in mind that the detection of food specific IgE by allergy skin test or RAST does not always equate with food allergy. If you can consume a food without developing allergic symptoms then you are not allergic to that food.
Dr. Gloria Fong
Family Medicine
In brief: No
My allergist colleagues usually do blood best for food allergies.

In brief: No
My allergist colleagues usually do blood best for food allergies.
Dr. Gloria Fong
Dr. Gloria Fong
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