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

The buildup of excess mucus in your nasal passages and throat is a common and uncomfortable symptom of many illnesses. JDawnInk via Getty Images Being sick with a cold or other congestion-causing ...

Several foods have immune-boosting and mucus-thinning properties that may help ease nasal congestion, a common symptom of ...

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, ...

A cough can feel like a particularly annoying symptom to deal with, especially if it’s keeping you awake at night or lingering for weeks on end. But there’s probably a good reason you have that cough ...

Clear, bubbly phlegm does not typically indicate a problem. However, coughing up large amounts could indicate an underlying health issue, such as fluid in the lungs. Phlegm, or sputum, is a type of ...

Coughing up phlegm after eating can be a sign that the act of eating is irritating or triggering something in the digestive system. Possible causes include food allergies, aspiration, or GERD. Phlegm ...

It’s too early to have data on how long most people are sick with subclade K, but Dr. Schaffner says he’s heard anecdotes of ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. LOS ANGELES (KTLA) – Flu rates have been ...