अमूर्त

Overview of Asthma

Freda Yang

Asthma is a disease that causes the airways to narrow and swell, as well as generate excess mucus. This can make breathing difficult, resulting in coughing, whistling (wheezing) on exhalation, and shortness of breath. Asthma is a mild annoyance for some people. Asthma is a mild annoyance for some people.