Bloody, brown, white, yellow, or green phlegm may be a sign of an underlying condition or infection. Viral and bacterial infections, allergies, and respiratory illnesses can cause phlegm as a symptom.

The color of the phlegm from patients with the lung disease bronchiectasis can indicate the degree of inflammation in their lungs and predict their future outcomes, according to new research presented ...

When you’re sick you’ll often produce more phlegm, and might notice it’s thicker or a different colour: white, green, yellow or maybe even brown. What can this phlegm – also called mucus, snot, sputum ...

The color of the phlegm from patients with the lung disease bronchiectasis can indicate the degree of inflammation in their lungs and predict their future outcomes, according to new research presented ...

Add Yahoo as a preferred source to see more of our stories on Google. There's no way around it: Coughing up phlegm feels gross, especially if you're already dealing with other unpleasant symptoms from ...

Add Yahoo as a preferred source to see more of our stories on Google. It's never any fun feeling under the weather, but when a common cold is paired with excess phlegm, it makes matters even worse.

Phlegm is a secretion made up of mucus produced in the airways and bronchi, mixed with dust, bacteria and inflammatory cells. Because coughing it up can be bothersome, some people simply swallow it.

Your phlegm may reflect an underlying imbalance in the body. Everyone knows that phlegm is the mucus produced during coughing. However, for traditional Chinese medicine (TCM) physicians, it’s more ...

In 1821, French physician René Laennec wrote, "A spitting pot I consider as an essential part of the bedroom apparatus." Laennec, who invented the stethoscope, spent his days gazing at his patients' ...

This article predates the current owners of Science Blog. It has not been reviewed under the current editorial process and is kept as part of the archive. Different coloured sputum used as indicators ...