Question

How does an asthma attack cause difficulty in breathing?

Answer 1

Asthma is caused by swelling (inflammation) in the airways. When anasthma attack occurs, the lining of the air passages swells and the muscles surrounding the airways become tight. This reduces the amount of air that can pass through the airway.

Answer 2

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Trouble breathing can be a sign of asthma. For many people, the main signs and symptoms of asthma are wheezing, shortness of breath, excess mucus and chest tightness. For others, a chronic cough that comes and goes every now and then may be the main or only symptom of asthma.