Nasal Polyps: Noncancerous growths inside the nasal passages
What are nasal polyps? Nasal polyps are soft, noncancerous growths that form inside the nasal passages or sinuses. They can be single or multiple, and they can range in size from a few millimeters to several centimeters. Nasal polyps are most common in adults, but they can also occur in children. What causes nasal polyps? The exact cause of nasal polyps is unknown, but they are thought to be caused by inflammation of the lining of the nose and sinuses. This inflammation can be triggered by a variety of factors, including: Allergies Asthma Cystic fibrosis Chronic sinusitis Immune system disorders, such as Churg-Strauss syndrome and allergic granulomatosis with polyangiitis (formerly known as Wegener's granulomatosis) Certain medications, such as aspirin and ibuprofen Pregnancy Exposure to secondhand smoke Air pollution What are the symptoms of nasal polyps? The symptoms of nasal polyps can vary depending on the size and number of polyps. Some people may have no symptoms at all, wh