This cold and flu season, you may be looking for clues you're getting better anywhere you can find them, even in the color of ...

Phlegm might seem like an everyday nuisance, but it can serve as a critical indicator of your body’s respiratory and systemic ...

When a white blood cell finds a germ, it latches onto it. Then it changes its shape to surround the germ. You can imagine the ...

As an upper respiratory infection progresses, your phlegm may become more yellow or green. If your cough with a metallic taste is caused by a common cold, there are few treatment options.

‘Cough associated with other symptoms – such as breathlessness, wheezing, yellow or green phlegm, or blood, chest pain or weight loss – is a serious worry. ‘Unexplained cough of any sort ...

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 ...

Whenever the cold and flu season comes along, it is common to hear those around you – at home or at the workplace – struggling with the discomforts of a runny nose, chesty cough, and the ...