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Diagnosis can involve nasal endoscopy, imaging studies like CT scan, allergy testing, tests for cystic fibrosis (in children), or a biopsy to rule out cancer.

Surgery, such as polypectomy or endoscopic sinus surgery, is considered when conservative treatments fail. Surgery removes the polyps and may improve the sinus drainage pathway, but polyps tend to recur.

Patients with nasal polyps may have a higher prevalence of asthma. The inflammation that contributes to the growth of polyps can also affect the lower airways, aggravating asthma symptoms.

Nasal polyps can affect quality of life by causing breathing difficulty, altering taste and smell, and contributing to persistent symptoms despite treatment, potentially leading to sleep disturbance or social and professional impairment.

People with allergies may be more likely to develop nasal polyps. The inflammation from allergic reactions can contribute to the growth of polyps, as it provides a prolonged inflammatory stimulus.

Nasal polyps can block sinus drainage and lead to bacterial growth, resulting in recurrent sinus infections. Chronic sinusitis can often be associated with the presence of nasal polyps.

Nasal polyps are noncancerous, painless, soft growths on the lining of your nasal passages or sinuses. They hang down like teardrops or grapes and result from chronic inflammation. They're associated with asthma, recurrent infection, allergies, drug sensitivity, or certain immune disorders.

Treatment includes corticosteroids to reduce inflammation, possibly shrinking the polyps or eliminating them. Antihistamines, antibiotics, or antifungal medications may be prescribed if allergies, bacterial, or fungal infections are present.

Preventative measures for nasal polyps include managing allergies and asthma proactively, using a humidifier to keep the air moist, practicing good nasal hygiene with saline sprays or rinses, and avoiding nasal irritants such as tobacco smoke.