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What causes cough-variant asthma?

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Like "classic" or "typical" asthma, no one really knows what causes cough-variant asthma. However, coughing may start after people are exposed to allergens, or when they are breathing in cold air. Coughing may also follow an upper respiratory infection. For example, sinusitis with asthma is common. In addition, a cough that begins after a person has begun taking beta-blockers is likely to be cough-variant asthma. Beta-blockers are drugs used to treat high blood pressure, heart disease, heart failure, migraines, palpitations, and other conditions. Beta-blockers are also found in eye drops to treat glaucoma and other eye problems. These eye drops can bring on asthma symptoms, including cough. Aspirin-sensitivity is another cause of coughing with asthma.

From: Cough-Variant Asthma WebMD Medical Reference

SOURCES: American Academy of Allergy, Asthma & Immunology.

National Lung Health Education Program: "Chronic Cough."

Dicpinigaitis, P. , Jan. 2006. Chest

Reviewed by Carol DerSarkissian on August 7, 2019

SOURCES: American Academy of Allergy, Asthma & Immunology.

National Lung Health Education Program: "Chronic Cough."

Dicpinigaitis, P. , Jan. 2006. Chest

Reviewed by Carol DerSarkissian on August 7, 2019

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How is cough-variant asthma diagnosed?

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