Nasal polyps are fleshy outgrowths of the mucous membrane of the nose.

• Nasal polyps are more likely to develop in people who have allergies or asthma.
• Some of the symptoms caused by polyps are nasal obstruction and congestion.
• Doctors usually diagnose nasal polyps based on their characteristic appearance.
• Corticosteroids can shrink or eliminate polyps, but sometimes polyps must be removed surgically.

Polyps are common teardrop-shaped growths that form around the openings to the sinus cavities. A mature polyp resembles a peeled, seedless grape. Unlike polyps in the colon or bladder, polyps in the nose are not tumors and do not suggest an increased risk of cancer. They are merely a reflection of inflammation, although there may be a family history of the problem. The doctor may perform a biopsy of the polyp to ensure that it is not a cancer.

Polyps may develop during infections and may disappear after the infection subsides, or they may begin slowly and persist. Many people are not aware that they have nasal polyps, although they may have sneezing, nasal congestion, obstruction, drainage of fluid down the throat (postnasal drip), facial pain, excessive discharge from the nose, loss of smell (anosmia), reduced ability to smell (hyposmia), itching around the eyes, and chronic infections.

Polyp Formation in the Nose Polyps usually develop in the area where the sinuses open into the nasal cavity. Polyps may block drainage from the sinuses. Fluid may accumulate in the blocked sinuses, causing a sinus infection.

People with nasal polyps may be seriously allergic to aspirinSome Trade Names
BAYER
and other nonsteroidal anti-inflammatory drugs (NSAIDs—see Pain: Nonsteroidal Anti-Inflammatory Drugs). People with nasal polyps can develop sinus infections if the polyps block drainage from the sinuses. Many develop asthma as well. Nasal polyps also can form if a foreign body is in the nose.

Corticosteroids in the form of nasal sprays or oral tablets may shrink or eliminate polyps. Endoscopic surgery or oral corticosteroids are needed if polyps block the airways or cause frequent sinus infections. Polyps tend to grow back unless the underlying irritation, allergy, or infection is controlled. Using an aerosol corticosteroid spray may slow or prevent recurrences. However, a doctor may need to examine the person periodically with nasal endoscopy (looking in the nose with a small rigid or flexible viewing tube) to evaluate and treat persistent or recurring problems.

Last full review/revision July 2008 by Marvin P. Fried, MD; Michael Jacewicz, MD