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Sinusitis is an infection of the lining of the sinuses near the nose. These infections most often happen after a cold or after an allergy flare-up. There are 4 types:
The sinuses are air-filled pockets (cavities) near the nose passage. The sinuses make mucus. This fluid cleans the bacteria and other particles out of the air you breathe.
A sinus infection can happen after a cold. The cold inflames the nasal passages. This can block the opening of the sinuses and lead to infection. Allergies can also cause the nasal tissue to swell and make more mucus and cause sinusitis.
Other conditions that can lead to sinusitis include:
If mucus drainage is blocked, bacteria may start to grow. This leads to a sinus infection, or sinusitis. The most common viruses and bacteria that cause sinusitis also cause the flu or certain kinds of pneumonia.
The symptoms of sinusitis may depend on your age. These are the most common symptoms:
Younger children
Older children and adults
The symptoms of sinusitis may look like other conditions or health problems. Always talk with your healthcare provider for a diagnosis.
Your healthcare provider can often diagnose sinusitis based on your symptoms and a physical exam. Sometimes other tests are done. These may include:
Treatment will depend on your symptoms, age, and general health. It will also depend on how severe the condition is.
Treatment of sinusitis may include:
You may be referred to an allergist or immunologist, especially for chronic or recurrent sinusitis. People who have had sinus surgery, but still have sinusitis, may also be referred.
Decongestants and antihistamines do not seem to help the symptoms of sinusitis.
Call if any of these occur:
These symptoms may point to a serious condition.
Tips to help you get the most from a visit to your healthcare provider: