Mayo Clinic Health Manager
Get free personalized health guidance for you and your family.
Get Started
About our e-newsletters
- Free e-newsletters
- Mayo Clinic expertise
- We do not share your e-mail address
Housecall, our weekly general-interest e-newsletter, keeps you up to date on a wide variety of health topics with timely, reliable, practical information, recipes, blogs, questions and answers with Mayo Clinic experts and more. Our biweekly topic-specific e-newsletters also include blogs, questions and answers with Mayo Clinic experts, and other useful information that will help you manage your health.
Housecall Archives
Mayo Clinic Housecall
Stay up to date on the latest health information.
What you get
- Free weekly e-newsletter
- Mayo Clinic expertise
- Recipes, tools and other helpful information
- We do not share your e-mail address
Tests and diagnosis
By Mayo Clinic staffYour doctor may suspect dust mite allergy based on symptoms, an examination of your nose and your answers to his or her questions.
He or she may use a lighted, instrument to look at the condition of the lining of your nose. If you have an allergy to something airborne, the lining of the nasal passage will be swollen and may appear pale or bluish.
Your doctor may suspect a dust mite allergy, based on your comments. For example, if your symptoms are worse when you go to bed or while cleaning — when dust mite allergens would be temporarily airborne — you may have dust mite allergy.
If you have a pet — another common source of allergies — it may be more difficult to determine the cause of the allergy, particularly if your pet sleeps in your bedroom. The source of your allergy may be clearer after you take steps to reduce levels of the possible allergens from your home.
Allergy skin test
Your doctor may suggest an allergy skin test to determine exactly what you're allergic to. You may be referred to an allergy specialist (allergist) for this test.
In this test, tiny drops of purified allergen extracts — including an extract for dust mites — are pricked onto your skin's surface. This is usually carried out on the forearm, but it may be done on the upper back.
The drops are left on your skin for 15 minutes before your doctor or nurse observes your skin for signs of allergic reactions. If you're allergic to dust mites, you'll develop a red, itchy bump where the dust mite extract was pricked onto your skin. The most common side effect of these skin tests is itching and redness. This usually goes away within 30 minutes.
Blood test
In some cases a skin test can't be performed because of the presence of a skin condition or because of interactions with certain medications. As an alternative, your doctor may order a blood test that screens for specific allergy-causing antibodies to various common allergens, including dust mites. This test may also indicate how sensitive you are to an allergen.
Lung function
Your doctor will examine how well your lungs are working by listening to your breathing and watching you breathe. If there are any signs or symptoms suggesting asthma, your doctor will likely use a device called a spirometer, which indicates how well your lungs function based on a measurement of airflow out of your lungs.
- Ferguson BJ. Environmental controls of allergies. Otolaryngology Clinics of North America. 2008;41(2):411-417,viii-ix.
- Platts-Mills T. Indoor allergens. In: Adkinson Jr. N, et al. Middleton's Allergy: Principles and Practice. 6th ed. Philadelphia, Pa.: Moseby, Elsevier; 2003. http://www.mdconsult.com/das/book/body/104827333-2/0/1183/241.html?tocnode=50745740&fromURL=241.html#4-u1.0-B0-323-01425-9..50041-1_1015. Accessed Sept. 9, 2008.
- Airborne Allergens: Something in the Air. U.S. Department of Health and Human Services. Bethesda, Md.: National Institute of Allergy and Infectious Diseases; 2003.
- Fletcher R. Patient information: Rhinitis. http://www.uptodate.com/home/index.html. Accessed July 24, 2008.
- German JA, et al. Environmental control of allergic diseases. American Family Physician. 2002;66(3):421-426.
- deShazo R, et al. Epidemiology and clinical manifestations of allergic rhinitis (rhinosinusitis). http:/www.uptodate.com/home/index.html. Accessed July 24, 2008.
- deShazo R, et al. Diagnosis of allergic rhinitis (rhinosinusitis). http://www.uptodate.com/home/index.html. Accessed July 27, 2008.
- Tips to remember: What is allergy testing? American Academy of Allergy, Asthma & Immunology. http://www.aaaai.org/patients/publicedmat/tips/whatisallergytesting.stm. Accessed Sept. 16, 2008.
- Tips to remember: What are "allergy shots"? American Academy of Allergy, Asthma & Immunology. http://www.aaaai.org/patients/publicedmat/tips/whatareallergyshots.stm. Accessed Sept. 16, 2008.
- deShazo R, et al. Patient information: Trigger avoidance in allergic rhinitis. http://www.uptodate.com/home/index.html. Accessed July 24, 2008.
- National Asthma Education and Prevention Program Expert Panel Report 3: Guidelines for the Diagnosis and Management of Asthma - Summary Report 2007. Bethesda, Md.: National Heart, Lung, and Blood Institute. http://www.nhlbi.nih.gov/guidelines/asthma/asthsumm.htm. Accessed Oct. 8, 2008.
- Platts-Mills T, et al. The role of allergens in asthma. American Family Physician. 2007;76(5):675-680.
