Eosinophilic Asthma: Causes, Symptoms, and Treatment
Medically reviewed by Achuta Uppu, MD, Internal Medicine. Last reviewed: October 23, 2026.
What kind of doctor treats Eosinophilic Asthma?
An allergist (a doctor who treats allergies and asthma) or a pulmonologist (a lung doctor) often treats eosinophilic asthma. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What is eosinophilic asthma?
Asthma is a long-term lung disease. It affects your airways, the tubes that carry air in and out of your lungs. When you have asthma, your airways can become inflamed (swollen) and narrowed.
Eosinophilic asthma is one type of asthma. The eosinophil is a white blood cell that can be elevated in people with allergies and asthma. People with eosinophilic asthma have increased levels of eosinophils in the blood and airways. They also have an elevated exhaled nitric oxide level, but may not have positive allergy tests to indoor or outdoor allergens.
Other types include allergic, non-allergic, neutrophilic, exercise-induced, and aspirin-induced asthma. Some people have more than one type.
Symptoms
Asthma symptoms include:
- Chest tightness.
- Coughing, especially at night or early morning.
- Shortness of breath.
- Wheezing, which is a whistling sound when you breathe out.
These symptoms can range from mild to severe. You may have them every day or only once in a while. In an asthma attack, your symptoms get much worse. Attacks may come on gradually or suddenly. Sometimes they can be life-threatening. They are more common in people who have severe asthma.
Causes and who gets it
The exact cause of asthma is unknown. Genetics and your environment likely play a role in who gets asthma. An asthma attack can happen when you are exposed to a trigger. A trigger is something that can set off or worsen your symptoms. Triggers include dust mites, mold, pets, pollen, infections such as colds and the flu, and tobacco smoke.
Asthma affects people of all ages, but it often starts during childhood. You are more likely to have asthma if one of your parents has it.
How doctors diagnose it
There is no one test that accurately diagnoses asthma. Allergy and immunology doctors may use a history and physical exam. They may also use allergy testing, blood testing, spirometry, a chest x-ray, or a mix of these. Spirometry is a breathing test that shows how well your lungs work.
A test called FeNO measures nitric oxide in your breath. High levels may mean that your lungs are inflamed. For eosinophilic asthma, tests can show increased eosinophils in the blood and an elevated exhaled nitric oxide level. It may still be hard to tell exactly which type of asthma a person has.
Treatment
You will work with your provider to create a treatment plan. It includes ways to avoid triggers and medicines to take.
The mainstay of asthma treatment is inhaled steroid medicine. It helps control inflammation and treat symptoms. Rescue inhalers hold a bronchodilator such as albuterol. This medicine rapidly opens up the airways to treat sudden symptoms.
People with severe asthma may be given steroids as pills or injections. Even when used now and then, these medicines are linked to many long-term side effects.
Biologic medicines block specific inflammatory pathways. For eosinophilic asthma, biologics can be used along with inhaled steroids. They include mepolizumab, benralizumab, reslizumab, dupilumab, and tezepelumab-ekko. They can reduce eosinophils and are approved to treat eosinophilic asthma.
When to see a doctor
See a doctor if you are having asthma attacks. You may need a change in your treatment.
If you have a severe attack and your rescue medicines do not work, you need emergency care. Call 911 or go to the emergency room if you have severe trouble breathing, chest pain or discomfort lasting two minutes or more, or fainting.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. Either can review your symptoms and medicines, help you follow your treatment plan, and refer you to an allergist or lung doctor when needed.
Common questions
Is eosinophilic asthma the same as allergic asthma?
No, but some people have both. People with eosinophilic asthma may not have positive allergy tests to indoor or outdoor allergens. People can also have overlapping asthma types.
Can eosinophilic asthma be treated?
Yes. Inhaled steroid medicines are the mainstay of asthma treatment. Biologic medicines can also reduce eosinophils and are approved to treat eosinophilic asthma.
Is there one test for asthma?
No. There is no one test that accurately diagnoses asthma. Doctors may use a history, a physical exam, allergy testing, blood testing, spirometry, or a chest x-ray.
Can an allergist treat asthma?
Yes. Allergy and immunology doctors are experts in diagnosing, testing, and treating asthma. They can also help find your asthma type and the medicines that fit you best.
Sources
- MedlinePlus - Asthma
- American Academy of Allergy, Asthma and Immunology - Asthma is a Condition of Phenotypes and Targeted Treatments
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
