Are you among the 37 million Americans who have sinus problems each year? If so, there's a lot you can do at home that can make a difference. Even better, many of these things are simple and inexpensive.

First, it's crucial to figure out why you have sinus problems, says Jordan S. Josephson, MD, a Manhattan ear-nose-throat specialist and author of Sinus Relief Now. "Allergies are a fairly common reason for sinus problems," he says.

The kinds that affect the nose include hay fever and indoor allergies.

Other reasons? "A dry nose leads to more sinus problems," says Richard F. Lavi, MD, an allergist in Twinsburg, OH. "Nasal dryness leads to congestion, thickened mucus, and worsened sinusitis."

Whatever the trigger, you can pick and choose from these five tips, or try all of them.