What Causes a Chronically Blocked Nose?
"Blocked nose" is a symptom with many possible causes. Most adults presenting to CENTAS have more than one contributing factor:
- Deviated nasal septum — the most common structural cause
- Turbinate hypertrophy — swollen turbinates inside the nose
- Allergic rhinitis — see our allergic rhinitis page
- Nasal polyps — soft, painless growths inside the nasal cavity
- Chronic sinusitis
- Vasomotor (non-allergic) rhinitis
- Rhinitis medicamentosa — rebound congestion from overuse of Otrivin / Iliadin / Afrin sprays
Symptoms Beyond "Can't Breathe"
- Mouth breathing and a dry throat on waking
- Snoring and disturbed sleep — often more impactful than the blockage itself
- Reduced sense of smell or taste
- Recurrent sinus infections
- Headache and facial pressure
- Fatigue from poor sleep quality
- Exercise intolerance — particularly cardio activities
Singapore-Specific Factors
- 80–90% humidity promotes nasal mucosal swelling
- House dust mites thrive year-round in our tropical climate
- Haze season (July–September) worsens baseline congestion
- Constant aircon cycling (hot outdoor → cold indoor) triggers vasomotor rhinitis
- Otrivin spray is freely available over the counter — long-term overuse is one of the most common reasons we see new patients
One-sided blockage needs investigation. A nose that is consistently blocked on one side only (rather than alternating between sides) should always be examined with nasoendoscopy. The differential includes deviated septum, polyps, and rare tumours.
When to See an ENT Doctor
- Blocked nose lasting more than 3 weeks
- Blockage that is alternating between nostrils (typical of turbinate or allergy)
- Blockage not responding to antihistamines
- Blockage causing snoring or affecting sleep
- Blockage on one side only
- Associated nosebleeds or loss of smell
How Is It Diagnosed?
- Anterior rhinoscopy (front-of-nose examination)
- Nasoendoscopy — thin flexible camera that gives a definitive view of the septum, turbinates, polyps, post-nasal space, and adenoids
- CT scan of the sinuses — when polyps or chronic sinusitis are suspected
- Skin prick allergy testing — when an allergic component is suspected
- Rhinomanometry — objective airflow measurement, used selectively
Treatment Options
Non-Surgical
- Intranasal corticosteroid sprays (fluticasone, mometasone) — first-line, safe for long-term use
- Nasal saline irrigation using a Neti pot or squeeze bottle
- Antihistamines for allergic-driven blockage
- Immunotherapy (SLIT or SCIT) for allergy-driven congestion
- Structured weaning programme to break Otrivin dependence
Surgical Options
- Septoplasty — straightens a deviated septum. Medisave-claimable.
- Turbinate reduction — radiofrequency or surgical reduction of swollen turbinates. Often combined with septoplasty.
- Polypectomy / FESS — removes polyps and opens the sinuses
- All performed as day surgery; typical recovery 1–2 weeks.
Why Choose Dr Pang?
- Established the Image Guided Surgery Program at the National University Hospital
- Nasoendoscopy in the first consultation — no waiting weeks for diagnosis
- Both medical and surgical expertise — care is not split across multiple providers
- High success rates with minimally invasive techniques
Frequently Asked Questions
Will surgery fix my blocked nose?
It depends on the cause. Septoplasty for a deviated septum and turbinate reduction for swollen turbinates have very high success rates. Allergy-driven congestion responds better to medical treatment, including immunotherapy, rather than surgery alone.
Is nasoendoscopy painful?
No. A numbing spray is applied first and the flexible camera takes about a minute. Most patients describe it as mildly uncomfortable rather than painful, and it provides a definitive diagnosis.
Is nose surgery Medisave-claimable?
Yes. Septoplasty, turbinate reduction, and Functional Endoscopic Sinus Surgery (FESS) are all Medisave-claimable when medically indicated. Our team will assist with claims and pre-authorisation.
How long is recovery after nose surgery?
Most patients return to office work in 7 to 14 days. Heavy exercise should be avoided for 4 weeks. Full healing of the internal nose continues for about 3 months.
I'm dependent on Otrivin spray — what should I do?
Long-term use of decongestant nasal sprays causes rebound congestion (rhinitis medicamentosa). Dr Pang will create a structured weaning plan, usually substituting a steroid spray and a short course of oral steroids.
Can a child have a chronically blocked nose?
Yes. Adenoid hypertrophy and allergic rhinitis are the leading causes in children. A chronically blocked nose in a child should be assessed because it can affect sleep, growth, and dental development.
Related Conditions
Allergic Rhinitis
The most common cause of chronic blocked nose in Singapore.
Sinusitis
Long-term blockage often progresses to recurrent sinus infections.
Snoring & Sleep Apnea
A blocked nose is a major contributor to snoring.
Allergy Immunotherapy
Long-term solution for allergy-driven nasal congestion.
Book a Nasoendoscopy Consultation
Stop guessing. See exactly what is blocking your nose.
Consultation, nasoendoscopy, and a personalised treatment plan can all be completed in a single visit at Mt Elizabeth.
3 Mount Elizabeth, #16-11, Mt Elizabeth Medical Centre, Singapore 228510