Nasal Polyps and Chronic Sinus Congestion: When It Is More Than Allergies
Nasal polyps can cause chronic congestion, lost smell, and recurring sinus infections. Learn what causes them and when a Las Vegas allergist can help.
If chronic nasal congestion, recurring sinus infections, or a slowly fading sense of smell has not improved despite months of allergy medication, nasal polyps may be part of the picture. Polyps are one of the most under-recognized drivers of stubborn sinus symptoms, and they are common enough that they are listed on the Tottori conditions we treat page under Nasal and Sinus Conditions. This guide explains what nasal polyps are, why they form, and how a Las Vegas allergy specialist can help you regain clear breathing.

What Nasal Polyps Are
Nasal polyps are soft, painless, non-cancerous growths that develop along the lining of the nasal passages or sinuses. They form in response to long-standing inflammation, most often from allergic rhinitis, chronic sinusitis, or asthma. Polyps can range from small enough to be invisible on a routine exam to large enough to block the sinus openings completely. When they grow large, they physically prevent normal mucus drainage, which is why patients often experience the double frustration of chronic congestion plus repeated sinus infections.
Symptoms That Suggest Polyps
Nasal polyps produce a distinctive symptom pattern that overlaps with other sinus problems but has its own signature:
- Persistent nasal congestion that does not respond to standard allergy medication
- Reduced or lost sense of smell, and by extension a dulled sense of taste
- Recurrent sinus infections that keep coming back after antibiotic courses
- Facial pressure or a heavy feeling around the eyes and forehead
- Postnasal drip that leads to chronic throat clearing or a nagging cough
- Snoring or disturbed sleep from mouth breathing at night
Why Polyps Develop
The exact cause of polyp formation is not fully understood, but the pattern is clear. Long-standing inflammation in the nasal lining, whether from environmental allergies, non-allergic rhinitis, chronic sinusitis, or asthma, appears to drive the tissue changes. Certain patient profiles carry higher risk, including adults with asthma, adults with aspirin-exacerbated respiratory disease, and patients whose allergic rhinitis has been undertreated for years. The Tottori conditions we treat list includes allergic rhinitis, non-allergic rhinitis, sinusitis, and nasal polyps together precisely because these conditions frequently coexist.
Aspirin-Exacerbated Respiratory Disease and Other Polyp Patterns

A specific subgroup of polyp patients has what is called aspirin-exacerbated respiratory disease, or AERD. These patients typically have the combination of nasal polyps, asthma, and reactions to aspirin or other nonsteroidal anti-inflammatory drugs like ibuprofen. Recognizing this pattern is important because standard polyp treatment alone will not manage the aspirin sensitivity, and taking common pain relievers can trigger significant respiratory symptoms. An allergist can identify AERD through history and, in some cases, supervised aspirin challenges.
A separate but related pattern affects patients whose polyps recur quickly after surgical removal. This suggests that the underlying inflammatory driver has not been addressed. In these cases, a full allergy evaluation, careful review of asthma control, and consideration of newer biologic medications targeting the immune pathways behind polyp formation can change the long-term trajectory. Rushing back to a second surgery without addressing the underlying inflammation typically buys only temporary relief.




