In TODAY.com's Expert Tip of the Day, a doctor reveals the important clues about your health that can be found in your snot.

The itchiness, sneezing and runny nose associated with seasonal allergies can be tough to deal with; but when the stuffiness gets bad enough, discomfort from sinus pressure can be a lot more than just ...

A sinus infection, also known as sinusitis, happens when the spaces inside your nose and head (called sinuses) become swollen and filled with mucus. Normally, these are empty and help air flow through ...

Tis the season for sinus infections. During the winter months, drier air — whether outside or in our cozy heated homes — causes the mucus lining in the nose to dry out and thicken, resulting in ...

If you’ve ever experienced the uncomfortable sensation of mucus traveling from your nose to the back of your throat, you know how uncomfortable it can feel. Figuring out how to stop post-nasal drip ...