There are four pairs of sinuses (named for the skull bones in which they're located). Interactive diagrams show sinus cavity locations and help visualize sinusitis, the most common type of sinus ...

Sinusitis, also known as a sinus infection, can cause symptoms such as facial pain, congestion, and headache. Learn about the causes, duration, and treatment options for sinusitis in this ...

WebMD helps you develop a plan to treat sinus problems that come from having allergies or a common cold.

Allergies, or allergic rhinitis, can also increase your risk of a sinus infection. If you do develop a sinus infection from allergies, you may experience a sinus headache along with other symptoms, ...

Neti pots can relieve sinus congestion, but using them incorrectly—like with tap water—can pose serious health risks. Learn safe tips.

Learn the essential facts about fungal sinus infections, from recognizing early warning signs to understanding treatment options for this serious condition.

Only patients with coronary-sinus anatomy that was suitable for implantation of the device were eligible to undergo randomization (for a list of anatomical features that were criteria for ...

What is the coronary sinus? Read on to learn more about this important blood vessel in the heart, including its location, function, and role in different heart procedures.

A sinus infection can cause tooth pain. Learn more about how the two are connected, the symptoms, and how a person can treat their sinus infection at home.

Sinus infections, when your sinuses are inflamed, may result from several causes, such as air pollutants, viruses, or allergies. Learn more.