Coughs from respiratory illness are often prolonged and productive, while heart failure typically causes a dry cough with little phlegm.

Ms. Sap, 68, undergoing chemotherapy for breast cancer, was admitted to the emergency room due to influenza A complications, acute respiratory failure, and pneumonia.

People with influenza A often experience high fever and severe body aches, whereas the common cold typically causes mild fever, a runny nose, and less widespread body pain.

I frequently experience a runny nose and a persistent phlegmy cough. What condition do these symptoms indicate, and how can it be treated? (Lan, Ho Chi Minh City)