From white phlegm to red phlegm, waking up with phlegm indicates some disturbance in the respiratory system. Here’s what it can mean. Waking up with phlegm could signal an underlying respiratory issue ...

Even the process of vomiting in itself is a terrifying experience, but when one is informed that they have vomited up phlegm, this can leave one panicked, too. Is it something serious, or an answer ...

Mucus is a thin, slippery fluid that lines the nose, throat, and other passages to trap dust and germs. Phlegm is a thicker type of mucus produced in the lungs to catch and remove harmful particles ...

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 ...

Drinking plenty of fluids can help decrease the thickness of phlegm and make it easier to remove. Bloody, brown, white, yellow, or green phlegm may be a sign of an underlying condition or infection.

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' ...