Sinus Infection

What is Sinus Infection?

A sinus infection, or sinusitis, is an inflammation of the tissue lining the sinuses, which are hollow air-filled spaces in the bones of your face. This inflammation causes mucus to build up instead of draining properly, leading to congestion and pressure.

Common Symptoms?

  • Facial pain or pressure around your eyes, cheeks, and forehead, which may worsen when you bend over.

  • Nasal congestion or stuffiness that makes it difficult to breathe through your nose.

  • Thick, discolored mucus (yellow or green) that drains from your nose or down the back of your throat (post-nasal drip).

  • Headache, especially in the front of your head.

  • Reduced sense of smell and taste.

  • Cough, which may be worse at night.

  • Sore throat.

  • Fatigue.

  • Bad breath.

Prevalence and Age Distribution?

In the United States, sinusitis is a very common condition:

  • Approximately 12% of the adult population is diagnosed with sinusitis.

  • This translates to about 30 million adults affected annually.

  • Chronic rhinosinusitis alone affects between 5% and 12% of the global population, with U.S. estimates ranging from 12.3% to 14.6%.

  • For adults, acute sinusitis is the fifth most common reason for an antibiotic prescription, though a majority of cases are viral and resolve without antibiotics.

  • Sinus infections affect people of all ages, but the patterns of sinusitis and the sinuses involved differ between children and adults.

The information is for general awareness and not a substitute for medical evaluation. If symptoms are severe or concerning, a healthcare professional can help assess them.