This condition can present at any age with a variety of symptoms. Initial diagnosis is clinical. Each patient's case must be investigated and treated appropriately, and there is often a delay before patients receive treatment.
The diagnostic criteria for chronic rhinosinusitis according to the American Academy of Otolaryngology is as follows:
Twelve weeks or longer of two or more of the following signs and symptoms:
Mucopurulent drainage (anterior, posterior, or both)
Nasal obstruction (congestion)
Decreased sense of smell.
Inflammation is documented by one or more of the following findings:
Purulent (not clear) mucus or oedema in the middle meatus or anterior ethmoid region
Polyps in nasal cavity or the middle meatus, and/or
Radiographic imaging showing inflammation of the paranasal sinuses.
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