Rutgers Cancer Institute of New Jersey
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Bronchospasm is narrowing of the airways due to a trigger. It is a symptom, not a diagnosis.
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The narrow airway is caused by muscle spasms around the airway. There is also swelling and increased mucus in the airway. It is triggered by allergens, infections, cold air, or chemicals. The triggers vary from person to person.
It is not clear what causes the tissue to overreact. It may be due to environment, genes, and biology.
The risk of bronchospasm is higher in people who have:
Symptoms of bronchospasm may be:
The doctor will ask about symptoms and health history. A physical exam will be done. The doctor may ask about things that might have triggered symptoms.
Tests may be done to look for allergies, infections, lung problems, or chemical exposures.
The goal is to ease swelling and symptoms. One or more medicines may be used, such as:
Bronchospasms cannot always be prevented. Finding triggers can stop more events. Triggers can be avoided or managed. Steps will depend on the trigger or allergy.
American Academy of Asthma & Immunology
Family Doctor—American Academy of Family Physicians
The Asthma Society of Canada
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Last reviewed July 2021 by EBSCO Medical Review Board Dan Ostrovsky, MD Last Updated: 7/27/2021