Phlegm buildup in the lungs and throat is a common problem, especially during colds, allergies, pollution exposure, or respiratory infections. Phlegm is a thick mucus produced by the respiratory ...

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, ...

Your body produces mucus naturally to protect your respiratory system, and under normal circumstances, this protective fluid remains clear and relatively thin. However, when mucus suddenly changes to ...

Q: I am continuously bothered by mucus or phlegm in my throat. I have a hard time swallowing it. Sometimes it seems to cover my throat so I can't breathe. One doctor told me it wasn't anything and ...

Cystic fibrosis affects many parts of the body, but its effects on the lungs can be especially harmful. Cystic fibrosis is a chronic and progressive condition that causes the mucus in your lungs to be ...

We know it well: That annoying sensation of mucus dripping down the back of your throat. Whether it happens when you’re getting over a cold or bogged down by spring or fall allergy symptoms, knowing ...