Chronic sinusitis (also known as chronic rhinosinusitis) is defined as "nasal obstruction, nasal drainage, facial pressure and/or decreased sense of smell, [lasting] for more than 12 weeks ...

If you have chronic or recurring sinusitis, an otolaryngologist, also known as an ear, nose, and throat (ENT) specialist, may use imaging and other tests to determine the cause. Do not give OTC ...

Findings on endoscopy include nasal polyps, mucopurulent drainage or edema/mucosal obstruction ... in the production of this manuscript. Chronic rhinosinusitis is one of the most common clinical ...