Your sinuses are air-filled spaces inside your forehead, cheekbones, and behind the bridge of your nose. When inflamed — usually because of an allergic reaction or an infection — they swell ...

A sinus infection, also known as sinusitis, happens when the sinus cavities—the air-filled areas within your skull—inflame ...

One of the telltale signs to discern if you have allergic rhinitis or a sinus infection is if you have itchy, watery eyes ...

Sinus pressure results from blocked nasal passages. When your sinuses cannot drain, you may experience inflammation and pain in your head, nose, and face. Many people experience sinus pressure ...