Asthma is an inflammatory disease of the airways to the lungs. It makes breathing difficult and can make some physical activities difficult or even impossible.
According to the Centers for Disease Control and Prevention (CDC), approximately 27 million Americans have asthma. It’s the most common chronic condition among American children: 1 child out of every 12 has asthma.
To understand asthma, you need to understand a little about what happens when you breathe.