Any condition that triggers chronic inflammation in your nasal passages or sinuses, such as infections or allergies, may increase your risk of developing nasal polyps. Conditions often associated with nasal polyps include:

  • Asthma, a disease that causes overall airway inflammation and constriction
  • Aspirin sensitivity may cause some people to be more likely to develop nasal polyps
  • Allergic fungal sinusitis, an allergy to airborne fungi
  • Cystic fibrosis, a genetic disorder that results in the production and secretion of abnormally thick, sticky fluids, including thick mucus from nasal and sinus membranes
  • Churg-Strauss syndrome, a rare disease that causes the inflammation of blood vessels

Your family history also may play a role. There's some evidence that certain genetic variations associated with immune system function make you more likely to develop nasal polyps.

Mar. 08, 2014