What is asthma?

Asthma is a chronic (long-term) lung disease. It affects your airways, the tubes that carry air in and out of your lungs. When you have asthma, your airways can become inflamed and narrowed. This can cause wheezing, coughing, and tightness in your chest. When these symptoms get worse than usual, it is called an asthma attack or flare-up.

How does asthma affect children?

Asthma often starts during childhood, usually before age 5. Many children have asthma - it is the most common chronic disease of childhood. It can cause children to miss school and end up in the hospital. But treatments can help manage asthma.

(Read more)