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Sinusitis - Topic Overview

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Sinus infections often follow a cold and cause pain and pressure in your head and face.

Sinusitis can be either acute (sudden) or chronic (long-term). With chronic sinusitis, the infection or inflammation does not completely go away for 12 weeks or more.

Sinusitis can be caused by three things:

  • Viruses.
  • Bacteria.
  • Fungi.

The same viruses that cause the common cold cause most cases of sinusitis.

When the lining of the sinus cavities camera.gif gets inflamed from a viral infection like a cold, it swells. This is viral sinusitis. The swelling can block the normal drainage of fluid from the sinuses into the nose and throat. If the fluid cannot drain and builds up over time, bacteria or fungi (plural of fungus) may start to grow in it. These bacterial or fungal infections can cause more swelling and pain. They are more likely to last longer, get worse with time, and become chronic.

Nasal allergies or other problems that block the nasal passages and allow fluid to build up in the sinuses can also lead to sinusitis.

The main symptoms of sinusitis are a runny or stuffy nose and pain and pressure in your head and face. You may also have a yellow or green drainage or drip from your nose or down the back of your throat (postnasal discharge). Where you feel the pain and tenderness depends on which sinus is affected.

Other common symptoms of sinusitis may include:

  • A headache.
  • Bad breath.
  • A cough that produces mucus.
  • A fever.
  • Pain in your teeth.
  • A reduced sense of taste or smell.

Your doctor can tell if you have sinusitis by asking questions about your past health and doing a physical exam. You probably won't need any other tests.

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