Huff coughing, or huffing, is a breathing technique that helps move mucus out of the lungs. It can clear the lungs and help prevent infection in people with conditions such as chronic obstructive ...

Healthy phlegm is usually clear and runny, but many different health conditions can change the consistency or color. Phlegm, also called sputum, is mucus produced by your lungs that helps protect your ...

When was the last time you walked into a public space and didn’t hear someone coughing? After three years of flinching at the sound, it can be disarming to hear so many people coughing – and ...

Whooping cough, medically known as pertussis, is a highly contagious bacterial infection that affects the airways. It gets its common name from the “whoop” sound that some infected children make when ...