What Is Sinusitis Exactly?
Pain in the forehead or between the eyes? Upper teeth ache? Face feeling full, nose stuffy and congested? You may have a common complaint that sends many people to a doctor’s office: sinus trouble.
Sinuses are air spaces in your skull lined with mucous membranes. Most people have four sets of nasal sinuses:
Sinuses are like fingerprints; everybody’s are different. Some people have no frontal sinuses or just one.
Sinusitis usually starts with inflammation triggered by a cold, allergy attack, or irritant. But it may not end there. Colds, allergies, and irritants make sinus tissues swell.