However, asthma is often the result of a strong response of the immune system to a substance in the lungs. To understand asthma, it helps to understand How the Lungs Work.
What does asthma do to the lungs? Asthma is a chronic (lifetime) disease. Asthma varies from person to person and can change over time. Many people with asthma can go for long periods of time without any symptoms, for example. There is no cure for asthma, but asthma can be controlled.
Get Help. Asthma is a chronic (life time) disease that makes your lungs very sensitive and hard to breathe. Asthma can’t be cured, but with proper treatment, people with asthma can lead normal, active lives. If you have asthma, your airways (breathing passages) are very sensitive.