Drinking plenty of fluids can help decrease the thickness of phlegm and make it easier to remove. Bloody, brown, white, yellow, or green phlegm may be a sign of an underlying condition or infection.

Black mucus is rare. It can be the sign of a fungal infection, or exposure to pollutants such as coal, dust or cigarette ...

Chest mucus, or phlegm, is a common symptom that often accompanies colds, flu, allergies, or respiratory infections. While mucus plays a protective role in trapping dust and pathogens, too much of it ...