• Aspirin Sensitivity - Nasal Polyps are more likely to occur in people who have an allergic response to aspirin or other NSAIDs (non-steroidal anti-inflammatory drugs).
• Asthma - Patients with late-onset asthma (asthma coming on in adulthood) rather than childhood asthma are more susceptible to developing Nasal Polyps.
• Allergic fungal sinusitis - This is an allergy to airborne fungi.
• Rhinitis - All types of chronic inflammation of nose including Hay Fever (i.e Allergic Rhinitis) may lead to nasal polyps.
• Cystic fibrosis - It is a hereditary disorder that affects organs such as the liver, lungs, pancreas, and intestines. It causes production of abnormally thick mucus in the airways which is difficult to cough up. Clogging within the lungs then increases the chances of infection.
• Age - Nasal polyps are more common among young and middle-aged adults.
• Genetics - It is possible that nasal polyps may occur in people having a family history of the same.
• Weak Immune System: It is seen that people having nasal polyps have weaker immunity as compared to others.