Dismiss Modal

Diagnosis

Asthma: Allergy Testing

Choose a preferred language

If you often have allergy symptoms, allergy testing can be helpful. It can help figure out if your symptoms are from allergies. Allergy symptoms can include:

  • Itchy and watery eyes

  • A runny nose

  • Wheezing

  • Sneezing

  • Itchy skin

For some people with asthma, allergies may not affect their nose or eyes. Instead, allergies trigger their asthma symptoms. In some cases, you can tell what you are allergic to. For example, your symptoms may only happen in the spring or fall. But you may need allergy testing to figure out other allergies. 

The healthcare provider will test how you react to allergens. These include:

  • Dust mites

  • Pets

  • Mold

  • Tree, weed, and grass pollen

  • Cockroach droppings

  • Many other substances

Sometimes allergy testing is done with a blood test (IgE). Or it may be done with a challenge test. For this test, you inhale the allergen or take it by mouth. But more often, you have skin testing. There are 2 types of allergy skin tests. One is the skin prick test. The provider pricks your skin using a needle with a small amount of allergen. If you are allergic, the spot will get red, swollen, and itchy. The other test injects a small amount of allergen under the skin.

If you think allergies may trigger your asthma, talk with your healthcare provider about getting tested. Knowing what you are allergic to is helpful. Then you can stay away from the allergens. Your provider may suggest that you get allergy shots (immunotherapy). These can help reduce your allergy and asthma symptoms.

Featured in

© 2000-2025 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.
Related Articles
Read more →
Allergies
Diagnostic Tests for Allergies

Detailed information on allergy testing, including blood tests and skin tests.

Read more →
Allergies
Allergies in Children

Allergies are problems of the immune system. Most allergic reactions happen when the immune system reacts to a “false alarm.” Normally, the human body defends itself against harmful things, such as viruses or bacteria. But sometimes the defenses violently attack mostly mild things, such as dust, mold, or pollen.

Read more →
Lung Health
Asthma

Asthma is a chronic lung disease. The airways become sensitive to triggers (allergens and irritants). Here's what you need to know.

Read more →
Allergies
Allergic Rhinitis

Allergic rhinitis is an allergic reaction that affects the nose and often the eyes. Common indoor allergens include house dust mites, mold, cockroaches, and pet dander. Outdoor allergens include pollen from trees, grasses, and weeds.