What is Asthma?

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People with asthma have asthma all the time, even if they can't feel it!

Three things happen in the lungs when someone has asthma:

  1. The airways become swollen

  2. The swelling causes mucus

  3. The muscles around the airways tighten

This makes it hard to breathe and causes asthma symptoms.

See how asthma affects airways!
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Asthma in the airways causes symptoms

See the infographics on symptoms:

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When you have symptoms, follow these steps!
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