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.
Small nasal polyps may not cause symptoms. Larger growths or groups of nasal polyps can block your nasal passages or lead to breathing problems, a lost sense of smell and frequent infections.
Nasal polyps can affect anyone, but they're more common in adults. Medications can often shrink or eliminate nasal polyps, but surgery is sometimes needed to remove them. Even after successful treatment, nasal polyps often return.
Nov. 12, 2016
- Nasal polyps. Merck Manual Professional Version. https://www.merckmanuals.com/professional/ear,-nose,-and-throat-disorders/nose-and-paranasal-sinus-disorders/nasal-polyps. Accessed Sept. 21, 2016.
- Usatine RP, et al. Nasal polyps. In: The Color Atlas of Family Medicine. 2nd ed. New York, N.Y.: The McGraw-Hill Companies; 2013.
- Diagnosis and treatment of respiratory illness in children and adults. Bloomington, Minn.: Institute for Clinical Systems Improvement. https://www.icsi.org/guidelines__more/catalog_guidelines_and_more/catalog_guidelines/catalog_respiratory_guidelines/respiratory_illness/. Accessed Sept. 21, 2016.
- Kliegman RM, et al. Nasal polyps. In: Nelson Textbook of Pediatrics. 20th ed. Philadelphia, Pa.: Elsevier; 2016. http://www.clinicalkey.com. Accessed Sept. 21, 2016.
- Adkinson NF, et al. Rhinosinusitis and nasal polyps. In: Middleton's Allergy: Principles and Practice. 8th ed. Philadelphia, Pa.: Saunders Elsevier; 2014. https://www.clinicalkey.com. Accessed Sept. 21, 2016.
- Bhattacharyya N. Clinical presentation, diagnosis, and treatment of nasal obstruction. http://www.uptodate.com/home. Accessed Sept. 21, 2016.
- Sinus rinsing and neti pots. Centers for Disease Control and Prevention. http://www.cdc.gov/parasites/naegleria/sinus-rinsing.html Accessed Sept. 22, 2016.