What is a nasal polyp?

Like a growth: Nasal polyps are soft, painless, noncancerous growths on the lining of your nasal passages or sinuses. They hang down like teardrops or grapes. They result from chronic inflammation due to asthma, recurring infection, allergies, drug sensitivity or certain immune disorders. (Taken from Mayo clinic web site)

Several treatments: Small nasal polyps can typically be treated with nasal steroid sprays. Larger nasal polyps may require oral Prednisone and possibly surgery. Evaluation by an ENT would be helpful. Nasal polyps can be associated with Aspirin allergy, fungal sinus infection and CF in children.

Usually allergy: You may consult this site for information. http://www.mayoclinic.org/diseases-conditions/nasal-polyps/basics/definition/CON-20023206 If you Google nasal polyps and check images you will see what nasal polyps look like.

Nasal polyp: It is thought that ongoing (chronic) inflammation in the nose causes swelling (oedema) of the lining of the nostril. Due to gravity, this swelling hangs down (dependent oedema), forming the polyp. Polyps usually affect both nostrils and can gradually enlarge, blocking the nose.http://patient.info/health/nasal-polyps-leaflet