05/22/2026
The invisible side of asthma: Asthma causes long-term swelling inside the airways that makes it hard to breathe.
Asthma medicines treat the swelling and squeezing of the airways to make breathing easier. There are many different options for asthma treatment. Your doctor may recommend a change to your medicine depending on how well-controlled (or not) your asthma is:
https://aafa.org/asthma/asthma-symptoms/asthma-control/