Introduction: Understanding Nasal Polyps
A blocked nose, reduced sense of smell, or repeated sinus problems can be frustrating, particularly when symptoms continue for weeks. Nasal polyps are one possible cause, although several other conditions can produce similar problems.
These growths are usually benign, meaning they are not cancerous. Small polyps may cause no symptoms, while larger ones can affect breathing, sleep, smell and sinus drainage.
Symptoms alone cannot confirm nasal polyps. Diagnosis depends on the person’s medical history and a clinical examination.
What Are Nasal Polyps?
Nasal polyps are soft, painless growths that develop from the lining of the nose or sinuses. The sinuses are air-filled spaces within the bones around the nose, cheeks, and forehead.
They form in areas affected by long-term inflammation and may occur singly or in groups. Larger polyps can narrow the nasal passages and obstruct sinus drainage.
Nasal polyps are not cancer. However, a single growth affecting only one side of the nose is less typical and should be assessed to rule out other causes.
Common Symptoms of Nasal Polyps
Symptoms usually become noticeable when polyps obstruct airflow or sinus drainage. Common symptoms include:
- A persistently blocked or stuffy nose
- A runny nose
- Mucus dripping down the throat, known as postnasal drip
- A reduced or lost sense of smell
- A reduced sense of taste
- Pressure around the forehead, cheeks or nose
- Facial discomfort or headache
- Snoring or mouth breathing
- Difficulty breathing comfortably through the nose
Swelling and blockage can prevent odours from reaching the smell receptors, so food may also seem less flavourful. Nasal obstruction may disturb sleep, cause daytime tiredness and contribute to repeated sinus problems.
These symptoms are not unique to nasal polyps. Allergic rhinitis, chronic sinusitis, a deviated nasal septum and other conditions may cause similar problems, so persistent or recurring symptoms need proper assessment.
What Causes Nasal Polyps?
The exact reason nasal polyps develop is not fully understood. They are strongly associated with long-term inflammation of the lining of the nose and sinuses.
Many people with nasal polyps also have chronic rhinosinusitis, meaning inflammation lasting 12 weeks or longer. However, chronic sinus inflammation does not always lead to polyps.
Conditions Associated With Nasal Polyps
Factors associated with nasal polyps include:
- Asthma
- Chronic nasal or sinus inflammation
- Allergic rhinitis
- Sensitivity to aspirin or certain non-steroidal anti-inflammatory medicines
- A family tendency towards nasal polyps or inflammatory conditions
- Certain immune or inherited conditions
Asthma, nasal polyps and sensitivity to aspirin or similar painkillers may occur together. Anyone who has experienced wheezing, swelling or breathing difficulty after these medicines should inform their doctor and should not test the reaction themselves.
Nasal polyps are uncommon in children. When they do occur, the doctor may consider whether an underlying condition, such as cystic fibrosis, needs investigation based on the child’s overall clinical findings.
How Nasal Polyps May Affect Daily Life
Persistent obstruction may cause mouth breathing, a dry throat, poor sleep and daytime tiredness. Loss of smell can affect appetite, enjoyment of food and awareness of warning smells such as smoke or gas.
Recurrent symptoms may interfere with work, exercise and concentration. People with asthma may also need their upper- and lower-airway inflammation managed together.
How Are Nasal Polyps Diagnosed?
Assessment usually begins with questions about the symptoms and how long they have been present. The doctor may ask about allergies, asthma, sinus infections, reactions to aspirin or painkillers, previous nasal treatment, and any past surgery.
The doctor then examines the nose. Polyps deeper inside the nasal passages or sinuses may require nasal endoscopy.
Nasal Endoscopy
Nasal endoscopy uses a thin instrument with a light and small camera to examine deeper parts of the nose. It helps the ENT specialist assess whether polyps are present, where they are located, and whether there is mucus, swelling, or another cause of blockage.
This is usually performed in the clinic, sometimes after a local anaesthetic or decongestant spray.
Scans and Other Tests
A CT scan is not required for everyone. It may be considered when a detailed view of the sinuses is needed, symptoms remain unexplained, or surgery is being planned.
Allergy testing or blood tests are used only in selected cases.
Diagnosis is based on the overall clinical picture rather than one symptom or test.
Treatment Options for Nasal Polyps
Treatment varies according to symptom severity, the extent of the polyps, associated conditions, and response to previous care. The goals are to reduce inflammation, improve breathing and smell, restore sinus drainage and limit recurrence.
Corticosteroid Nasal Sprays or Drops
A corticosteroid nasal spray or nasal drops are commonly used as an initial treatment. They reduce inflammation and may gradually shrink the polyps.
They need to be used regularly and correctly. Improvement may take time, and treatment may continue after symptoms settle.
Short Courses of Oral Corticosteroids
Steroid tablets may be considered when polyps are large, symptoms are severe or nasal treatment has not provided enough relief. They can reduce inflammation more widely and may shrink polyps.
Because oral steroids can cause significant side effects, they are generally prescribed for a limited period. They should not be started or repeated without medical supervision.
Saline Rinses and Treatment of Related Conditions
Saline rinses can remove thick mucus, allergens and irritants and may help prescribed medicines reach the nasal lining. They do not control the underlying inflammation on their own.
Only sterile or distilled water, or water that has been boiled and cooled, should be used for nasal irrigation. The rinsing device should also be cleaned as directed.
Allergy treatment may be recommended when allergic rhinitis contributes to symptoms. Antibiotics are only useful when a bacterial infection is suspected or confirmed; they do not shrink nasal polyps and are not needed for every episode of sinus discomfort.
Biologic Medicines
Biologics are targeted medicines that act on specific parts of the immune response involved in inflammation. They may be considered for selected people with severe chronic rhinosinusitis and nasal polyps that remain poorly controlled or repeatedly return despite appropriate standard treatment.
They are injections requiring specialist assessment and are not a routine first treatment for mild or newly diagnosed polyps.
Endoscopic Sinus Surgery
Surgery may be considered when medicines do not provide adequate relief, polyps cause substantial blockage, or symptoms continue to affect daily life.
During endoscopic sinus surgery, a small camera and instruments are passed through the nostrils. The surgeon removes polyps and may widen blocked sinus openings; there are usually no external facial cuts.
Surgery removes existing obstruction but does not eliminate the tendency towards inflammation. Nasal steroid treatment and saline rinses are often continued afterwards to support healing and reduce recurrence.
The expected benefits, limitations and possible risks should be discussed before deciding whether surgery is appropriate.
Can Nasal Polyps Return After Treatment?
Nasal polyps can return after medical treatment or surgery because the underlying inflammatory condition may remain active. Recurrence does not necessarily mean that treatment has failed.
Follow-up allows the doctor to review symptoms, smell, airflow, and the nasal lining. Some people remain controlled with regular treatment, while others need changes if polyps return.
Breathing may improve even when the sense of smell does not return completely.
Practical Steps for Managing Nasal and Sinus Health
It is not always possible to prevent nasal polyps, but sensible measures can support treatment:
- Use prescribed nasal medicines consistently and correctly.
- Keep asthma and allergies appropriately managed.
- Avoid cigarette smoke and known airborne irritants where possible.
- Use saline rinses safely if advised.
- Attend follow-up appointments when symptoms persist or return.
- Never attempt to pull out or remove a suspected polyp at home.
In Singapore, haze, indoor dust and year-round allergens may aggravate symptoms in some people, but they do not prove that polyps are present. Persistent symptoms still require assessment.
When Should You Consult a Doctor or ENT Specialist?
Arrange a routine medical appointment when nasal blockage, reduced smell, postnasal drip or sinus symptoms persist, recur frequently or interfere with sleep and daily activities.
An ENT assessment may be useful when symptoms do not improve with initial treatment, the diagnosis is uncertain, smell loss is significant, sinus infections keep returning, or there appears to be a blockage on one side only.
Seek prompt medical attention if symptoms worsen rapidly or are accompanied by marked facial swelling, severe pain or fever.
Urgent assessment is needed for swelling or pain around the eyes, double vision or other visual changes, forehead swelling, a severe worsening headache or neck stiffness. These features may indicate a complication rather than uncomplicated nasal polyps.
Conclusion
Nasal polyps are soft, noncancerous growths linked to ongoing inflammation inside the nose and sinuses. They may cause persistent blockage, loss of smell, postnasal drip, snoring and repeated sinus problems, but these symptoms can also have other causes.
Treatment may involve nasal medicines, saline rinses, management of related allergies or asthma, selected biologic medicines or endoscopic surgery. The most suitable approach depends on the individual’s symptoms, examination findings and response to treatment.
Persistent, recurring, severe or worsening nasal symptoms should not simply be assumed to be polyps. A medical or ENT assessment can clarify the cause and help develop an appropriate, patient-centred management plan.
Frequently Asked Questions (FAQs)
1. What is the best treatment for nasal polyps?
There is no single treatment that is best for everyone. Corticosteroid nasal sprays or drops are commonly used first to reduce inflammation and shrink the polyps. Short courses of steroid tablets, biologic medicines or endoscopic sinus surgery may be considered when symptoms are severe or do not improve sufficiently.
The appropriate treatment depends on the size and extent of the polyps, associated conditions such as asthma, and the person’s response to previous care.
2. Can I live a normal life with nasal polyps?
Yes. Many people with nasal polyps continue their usual work, exercise and daily activities, particularly when their symptoms are well controlled.
However, persistent nasal blockage, poor sleep, loss of smell or repeated sinus problems can affect quality of life. Regular treatment and follow-up may help manage these symptoms, although polyps can return after treatment.
3. What is the root cause of nasal polyps?
The exact reason some people develop nasal polyps is not fully understood. They are closely associated with long-term inflammation and swelling of the lining inside the nose and sinuses.
Conditions linked with this inflammation include chronic rhinosinusitis, asthma, allergies and sensitivity to aspirin or certain anti-inflammatory painkillers. Having one of these conditions does not necessarily mean that a person will develop nasal polyps.
4. Can nasal polyps be treated without surgery?
Yes. Many patients begin with non-surgical treatment, particularly corticosteroid nasal sprays or drops. Saline rinses and treatment for related asthma or allergies may also form part of the management plan.
Surgery is usually considered when medicines do not provide adequate relief, the polyps cause significant obstruction or symptoms continue to affect daily life.
5. Can nasal polyps return after treatment?
Nasal polyps can return after medication or surgery because treatment may not remove the underlying tendency towards inflammation. This does not necessarily mean that the original treatment was unsuccessful.
Continuing prescribed nasal treatment, managing related conditions and attending follow-up appointments may help reduce symptoms and identify recurrence early.