Coughing up thick, green mucus may mean a bacterial or, less often, viral infection, but that's not always true. You ...

If you’ve ever fought a cold or infection in the past, chances are you’ve had the not-so-pleasant experience of coughing up ...

"A sinus infection occurs when the sinuses, air-filled spaces behind the forehead, nose, and cheek, become inflamed and infected. These air-filled pockets get filled up with infected mucus and ...