Asthma is a common chronic respiratory disease in the population with symptoms of cough, wheezing, shortness of breath and phlegm. If asthma is not controlled effectively, in the long term, asthma will cause many different complications, impair health, and affect the patient's quality of life.

Pneumomediastinum is a rare disease. Most cases of pneumomediastinum occur due to rupture of alveoli, or rupture of the trachea - bronchus, esophagus.