A sinus infection, also known as sinusitis, occurs when the air cavities around your nasal passages become inflamed and ...

If you’re among the 37 million Americans who suffer from sinus problems, you know just how miserable the symptoms can make you feel. The congestion. The facial pain. The postnasal drip-drip-drip.

Sinus infections (also known as sinusitis) strike more than 30 million Americans each year. And if you're one of them, you're ...