Nasal Polyps: What They Are, Causes, Symptoms, and Treatment Options

What Are Nasal Polyps?

Nasal polyps are soft, painless, noncancerous growths that develop on the lining of the nasal passages or sinuses. They hang down like teardrops or grapes and can vary in size from a few millimeters to several centimeters. When polyps grow in clusters or become large enough, they can block the nasal passages, leading to breathing difficulties, chronic congestion, and a reduced sense of smell. Although they are benign, polyps can significantly affect quality of life and often require ongoing management.

Common Symptoms of Nasal Polyps

Small polyps may not cause noticeable symptoms, but as they grow, they can produce a range of persistent issues. Common signs include:

• Stuffy or blocked nose (nasal obstruction)
• Runny nose or postnasal drip
• Reduced or complete loss of smell (anosmia)
• Reduced sense of taste
• Facial pressure or pain
• Snoring or noisy breathing during sleep
• Frequent sinus infections

Because these symptoms overlap with those of a cold, allergies, or chronic sinusitis, polyps are sometimes overlooked. If congestion or smell loss lasts longer than ten days without improvement, a medical evaluation is worthwhile.

What Causes Nasal Polyps to Form?

The exact reason polyps develop is not fully understood, but they are linked to chronic inflammation in the mucous membranes of the nose and sinuses. Certain conditions and factors increase the likelihood of developing polyps:

• Chronic rhinosinusitis (long-term sinus inflammation)
• Asthma, especially aspirin-exacerbated respiratory disease (AERD or Samter's triad)
• Allergic rhinitis or other allergies
• Cystic fibrosis
• Churg-Strauss syndrome (eosinophilic granulomatosis with polyangiitis)
• Vitamin D deficiency
• A family history of polyps or related conditions

Inflammation causes blood vessels in the nasal lining to swell and fluid to accumulate. Over time, this tissue droops into the nasal cavity or sinuses, forming a polyp. Recurrence after treatment is common, which is why long-term management often becomes necessary.

How Are Nasal Polyps Diagnosed?

A doctor will usually start with a physical examination and a review of symptoms. Because polyps sit deep in the nasal passages, they may not be visible without special tools. Common diagnostic steps include:

• Nasal endoscopy: a thin, flexible tube with a camera is inserted into the nose to visualize the polyps directly.
• CT scan of the sinuses: this imaging test shows the size, location, and extent of polyps, as well as any sinus blockage.
• Allergy testing: to check if allergic inflammation is contributing to the problem.
• Blood tests: including vitamin D levels or tests for conditions like cystic fibrosis in certain patients.

An accurate diagnosis helps rule out other causes of nasal blockage and guides the right treatment plan.

Treatment Options for Nasal Polyps

Treatment aims to shrink polyps, relieve symptoms, and prevent recurrence. The approach depends on the size of the polyps, the severity of symptoms, and the patient's overall health.

Medications

Most treatment plans begin with medications rather than surgery:

• Intranasal corticosteroid sprays: these reduce inflammation and can shrink small polyps. Examples include fluticasone, mometasone, and budesonide.
• Oral corticosteroids: a short course of pills such as prednisone can shrink larger polyps quickly, but long-term use is limited by side effects.
• Nasal saline rinses: these help clear mucus, allergens, and irritants, and improve the effectiveness of topical medications.
• Antileukotriene medications: drugs like montelukast may help in some patients, especially those with asthma or aspirin sensitivity.
• Biologic therapies: injectable medications such as dupilumab or omalizumab target specific inflammatory pathways and are used for severe, recurring polyps.
• Antibiotics: if a bacterial sinus infection is present alongside polyps.

Surgery

When medications do not provide enough relief, endoscopic sinus surgery may be recommended. During this minimally invasive procedure, a surgeon uses a thin scope and instruments to remove polyps and open up blocked sinus passages. Surgery improves breathing and allows medications to reach the sinus lining more effectively. However, polyps can return, so postoperative care with nasal sprays, rinses, and regular follow-up visits is essential.

Living With Nasal Polyps

Managing nasal polyps is often a long-term effort. Consistent use of prescribed nasal sprays, regular saline rinses, and avoiding known triggers such as tobacco smoke or allergens can reduce the chance of recurrence. People with asthma or aspirin sensitivity should work closely with their healthcare team to keep underlying conditions under control. While polyps can be frustrating, the right combination of treatments usually brings meaningful improvement in breathing, smell, and overall comfort.