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Definition
By Mayo Clinic staffIf you cough, wheeze or feel out of breath during or after exercise, you may have exercise-induced asthma. As with asthma triggered by other things, exercise-induced asthma occurs when the main air passages of your lungs, the bronchial tubes, become inflamed. The muscles of the bronchial walls tighten, and cells in the lungs produce extra mucus, further narrowing your airways. This can cause signs and symptoms that range from minor wheezing to severe trouble breathing.
If you have exercise-induced asthma, physical exertion may be the only thing that triggers your symptoms. Or exercise may just be one of several things that trigger an asthma attack. The good news is that exercise-induced asthma doesn't have to limit your athletic goals — whether your aim is a weekly jog or elite competition. Proper treatment can help you keep symptoms under control — and help you exercise as much as you want.
Symptoms
