Nasal polyps are soft, painless, noncancerous growths on the lining of nasal passages or sinuses which hang down like teardrops or grapes. They are results from chronic inflammation due to asthma, recurring infection, allergies, drug sensitivity or certain immune disorders. Nasal polyps are soft and lack sensation which may not be noticable when they're small. Multiple growths or a large polyp may block nasal passages or lead to breathing problems, a lost sense of smell and frequent infections.

Common signs and symptoms of chronic sinusitis with nasal polyps include runny nose, persistent stuffiness, postnasal drip, decreased or absent sense of smell, loss of sense of taste, facial pain or headache, pain in the upper teeth, a sense of pressure over the forehead and face and snoring.

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