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

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.

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.

No: My allergist colleagues usually do blood best for food allergies.