Add Yahoo as a preferred source to see more of our stories on Google. Even if it is kind of gross when you're full of it and wrestling with it, phlegm actually serves a useful purpose: The thick, ...

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.

Are you troubled by feelings like, "Phlegm is stuck deep in my throat and won't come out," or "When I force a violent ...

I am 60 years old. I am recovering from a severe cold. My throat and mouth become dry at midnight and there appears to be a blockage in the throat, which is not easy to clear. I have a sensation that ...

Even if it is kind of gross when you're full of it and wrestling with it, phlegm actually serves a useful purpose: The thick, sludgy substance—made up of mostly water, salt, and antibodies—is designed ...