Coughing up white mucus can signal an upper respiratory infection or chronic conditions like COPD. Viral infections causing white mucus can't be treated with antibiotics, so rest and drink plenty of ...

While boogers can potentially tell you something about your health, they're not a perfect diagnostic tool, and this myth is a ...

Harvard Medical School’s Emily S. Wan, MD, discusses mucus plugs in COPD, how to detect them, and what would make them a treatment target.

Black phlegm is rare and can be caused by inhaling pollutants like smoke, soot, or industrial chemicals that settle in the airways. Once exposure ends, phlegm usually returns to its normal color.

Sputum is considered a noninvasive marker of airway inflammation, and its color is an indicator of bronchiectasis disease ...

Disgusting though they may be, phlegm is nothing to sneeze at. Here’s what its color and appearance can tell you about your health, and how to get rid of phlegm. Admit it: After you blow your nose or ...

When a person has black or dark-colored mucus, they may have inhaled potentially harmful pollutants. Coughing up black mucus may also be due to an underlying infection or condition. Mucus serves an ...