Chest tightness, cough, and shortness of breath.

A9A -year-old boy presents with a complaint of chest tightness, cough, and shortness of breath. This usually occurs during periods of exertion, but he has also woken up several times during the night with similar symptoms.

His general health has been good and his physical exam, including breath sounds, is normal at this time. What possible diagnosis should be explored? (a) (b) (c) How should this boy be assessed for airflow obstruction?

What medication, dose, and route of administration would you suggest? How should he monitor