Allergic rhinitis is an inflammation of the inner lining of the nose and is caused by an allergic reaction to certain triggers, such as pollen, dust mites, animal dander, and mold. Testing for allergic rhinitis is done by a variety of methods, including skin testing, blood tests, and elimination tests.
Skin Testing
Skin testing is the most common method used to diagnose allergic rhinitis. During this type of test, a small amount of the allergen is introduced to the skin, usually on the arm or back. If the person has an allergic reaction, they will develop a red, itchy bump at the site of the allergen.
Blood Tests
Blood tests, such as Radioallergosorbent Testing (RAST), are used to detect the presence of IgE antibodies, which are produced by the body when it is exposed to an allergen. This type of test is used when skin testing is not possible, such as in people who are taking certain medications that may interfere with the results.
Elimination Tests
Elimination tests involve removing suspected allergens from the person’s environment and then reintroducing them one at a time to see if the person has an allergic reaction. This type of test is often used to confirm the results of skin or blood tests.