Medically reviewed by Jane Kim, MD A sinus infection, or sinusitis, is inflammation of the cavities around your nasal passages. Symptoms of a viral or bacterial sinus infection include congestion ...

Sinus infections (also known as sinusitis) strike more than 30 million Americans each year. And if you’re one of them, you’re family with uncomfortable sinus infection symptoms such as nasal ...

It is rare for a sinus infection to spread to the brain. However, if this does occur, it requires immediate medical care. Learn more about the signs here.

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 ...

With cold and flu season comes an increased risk of sinus infections, which can trigger a runny nose, sinus pressure, congestion and postnasal drip, among other bothersome symptoms. Fortunately ...

As a sinus infection goes away, a person will notice an improvement in their symptoms. Learn more here.

Allergies and sinus infections often are mistaken for one another. But they are two separate conditions.