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Asthma Overview
Asthma is a disease that affects the breathing passages of the lungs (bronchioles). Asthma is caused by chronic (ongoing, long-term) inflammation of these passages.
What Causes Asthma?
It is not clear exactly what makes the airways of people with asthma inflamed in the first place. Your inflamed airways may be due to a combination of things.
Symptoms and Complications of Asthma
Some children feel an itch on the back of the neck just prior to an asthma attack. Most people have some warning sign that they can learn to recognize. Some signs, like a sore throat, are obvious. Others, like dark circles under your eyes or a change in the colour of your face, may go unnoticed.
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