Nasal obstruction is common. In Singapore, year-round triggers, house dust mites, haze exposure and frequent time in air-conditioned rooms may contribute to chronic nasal irritation.
Nasal obstruction can result from an inflammation of the nasal lining, a structural narrowing, or a combination of both. Rhinitis, viral illness, sinus infections, a deviated nasal septum, enlarged turbinates, nasal polyps, and nasal valve collapse are common causes. In children, enlarged adenoids can also block airflow at the back of the nose.
Many people describe a nasal obstruction as a blocked or stuffy nose, difficulty breathing or trouble getting enough air through the nose. The condition can affect both nostrils equally or affect only one. It may come and go, or it may be present most of the time. Some patients feel blocked only at night. Others notice that one side is always worse, especially during exercise or sleep.
What it is is that a nasal obstruction is a partial or complete blockage of airflow through one or both sides of the nasal cavity. The nose is not just an airway. It warms, filters and humidifies the air we breathe. The lining of the nose protects the throat and lower airways from dryness. When the nasal airway is narrowed, the airflow may become less comfortable.
This can lead to mouth breathing, dry throat, snoring, poor sleep, reduced exercise tolerance and a reduced sense of smell. Over time, chronic mouth breathing may also contribute to dental problems, including dry mouth, gum irritation and a higher risk of cavities.
A blocked nose that persists should not simply be dismissed as a common rhinitis symptom, especially if it is one-sided, worsening or associated with bleeding.
Several factors can affect how easily air moves through your nose, ranging from physical blockages to swelling:
Deviated Septum (Septal Deviation)
The wall that separates your two nostrils is naturally off-centre, which can make one side of your nose narrower and harder to breathe through.
Nasal Valve Collapse
Sometimes, the narrowest part of the nasal airway is structurally weak. When you inhale, the cartilage doesn’t remain rigid but caves inward, temporarily blocking the airflow.
Enlarged Adenoids
These are small glands located at the very back of your nose. They are more common in children, and when they become swollen, they can physically block the airway.
Foreign Objects
Especially in younger children, it’s not uncommon for small objects to accidentally get lodged in the nasal passage, causing a blockage.
Nasal Tumours
While less common, abnormal growths, which can be noncancerous or cancerous, can develop in the nasal passage and obstruct your breathing.
Inflammatory nasal obstruction occurs when the tissues lining the inside of your nose swell due to irritation, infection, or immune responses.
Enlarged Turbinates (Turbinate Hypertrophy)
Inside your nose, there are small, bony structures that help filter and warm the air you breathe. Sometimes these become swollen and take up too much space, making it harder for air to get through.
Nasal Polyps
These are soft, noncancerous growths that can develop on the lining of your nasal passages or sinuses. Because they occupy space, they can physically block your airway.
Chronic Sinusitis
This refers to persistent swelling and inflammation within your sinus cavities. When this inflammation doesn’t go away, it often leaves you feeling congested and uncomfortable.
Allergic Rhinitis
This is essentially your body’s reaction to environmental triggers like pollen, dust, or pet dander. The result is often increased swelling and extra mucus, which can easily clog the nasal passages.
Non-Allergic Rhinitis
Unlike allergies, this isn’t caused by a specific reaction to an allergen. Instead, it’s inflammation triggered by everyday irritants, such as tobacco smoke, strong odours, or sudden shifts in the weather.
Nasal obstruction symptoms include reduced airflow, mouth breathing, sleep disturbance and a reduced sense of smell.
Patients may notice that one nostril feels blocked, or that the blockage alternates between nostrils. A blocked nose is a common symptom, and other symptoms may follow over time. Some people wake with a dry mouth because they open their mouths at night. Others experience snoring, restless sleep, difficulty breathing through the nose, facial pressure or frequent throat clearing.
Chronic nasal obstruction can also contribute to disturbed sleep and daytime sleepiness. In some patients with allergies, symptoms may worsen, including snoring or obstructive sleep apnea (OSA), a condition in which airflow repeatedly pauses or becomes shallow during sleep. Nasal obstruction is not the only cause of OSA, but improving nasal airflow can be an important part of overall management.
If the cause is atopy, symptoms may include sneezing, an itchy nose, a clear, runny nose, and itchy or watery eyes. If sinusitis is present, there may be thick nasal discharge, facial pain, reduced sense of smell, and postnasal drip. Nasal polyps may cause a gradual loss of smell and persistent congestion.
Structural problems may cause a more fixed blockage. A deviated septum often makes one side feel consistently narrower. Nasal valve collapse may feel worse when inhaling deeply, during exercise, or when lying down.
Barrie Tan ENT Head & Neck Surgery provides comprehensive care for all types of nasal obstructions.
If you believe you or a loved one has a nasal obstruction, contact us today so that we can start working on a plan towards better breathing.
You should see an ENT specialist if your nasal obstruction is persistent, one-sided, recurrent or affecting sleep or daily function.
A common cold or other minor nasal conditions usually improve within a few days to a week. Consult an ENT specialist if the nasal congestion persists for more than 10 to 14 days, especially if it is worsening, recurring or not responding to the usual care. Chronic nasal obstruction that persists, recurs, or does not respond to medication should be evaluated. This is especially important if the symptoms affect your sleep quality, exercise, work, school or your quality of life.
Seek a prompt ENT review if the nasal blockage is only on one side, worsening over time, or associated with nosebleeds, blood-stained mucus, facial pain, facial numbness, double vision, a lump in the neck, unexplained weight loss or a reduced sense of smell that does not improve. These signs do not always mean something serious, but they should not be ignored.
Children should be assessed if nasal blockages cause noisy airflows, persistent mouth breathing, snoring, restless sleep, recurrent ear infections, speech issues or feeding problems. Adenoid enlargement is a common cause of nasal obstruction in children and may also affect the ears.
Accurately diagnosing nasal obstruction requires a clear picture of where the airway is narrowed and what is causing the blockage. Accurate diagnosis usually starts with a physical examination and a review of medical history. It is useful to know whether the obstruction is constant or intermittent, one-sided or affects both sides, and whether it improves with antihistamine medication or nasal sprays.
The nose is examined externally and internally. The ENT specialist may look for a deviated septum, enlarged turbinates, mucosal change, crusting, polyps, discharge, scarring or nasal valve collapse. In some cases, a simple manoeuvre that supports the sidewall of the nose can help show whether the nasal valve is contributing to an obstruction.
A nasal endoscopy is often useful. This involves passing a slim camera through the nose to examine the nasal passages, the back of the nose, sinus drainage areas, and the nasopharynx. It can help detect polyps, enlarged adenoids, tumours, or other causes in the nasal cavity that are not visible from the front.
A CT scan may be recommended if sinus disease, polyps, complex anatomy, trauma or a mass is suspected, or if surgery is being considered. Skin or blood tests may be useful when symptoms suggest atopy and help guide the optimal treatment.
How we approach your care depends entirely on what’s causing the nasal obstruction in the first place.
If you’re dealing with a standard cold or viral infection, simple habits, like getting plenty of rest, staying hydrated, using saline rinses, or running a humidifier, are often the most effective ways to manage congestion until it naturally clears up. If you spend a lot of time in dry, air-conditioned rooms, a humidifier or saline spray can also help soothe the irritation.
When the issue is sinus-related, the focus is generally on saline rinses and prescription steroid nasal sprays to reduce the swelling. If we suspect a bacterial infection, antibiotics might be part of the plan.
When enlarged turbinates are the culprit, the objective is to reduce the swelling. Select over-the-counter decongestant sprays for quick relief with caution, as relying on them long-term can make your nose even more blocked once the spray wears off.
If the nasal obstruction is caused by the physical structure of your nose, such as a deviated septum or a collapsing nasal valve, medication can help reduce the swelling, but it won’t correct the structural issue. Some patients use temporary aids, such as nasal strips or internal dilators, to help with sleep and exercise.
When the nasal obstruction is due to structural issues or does not improve with medical treatments, surgery may be an option to help restore easier breathing.
If a deviated septum is blocking your airflow, a septoplasty can help. This procedure straightens the septum to create a clearer path for air to flow through both sides of your nose. It is typically considered when one side remains blocked despite consistent medical therapy.
Your turbinates are small, shelf-like structures inside the nose that warm and humidify the air you breathe. If the turbinate tissue becomes chronically enlarged and blocks your airway, it may need to be reduced, while preserving the lining necessary for your nose to function normally.
FESS can be effective for chronic sinusitis or nasal polyps by opening blocked sinus pathways and removing the diseased tissue or polyps that do not respond to medications.
If the sidewall of your nose is weak, narrow, or collapses when you inhale, it can significantly restrict airflow. Treatment depends on the location and nature of the collapse. Surgeons may use cartilage or other specialised support to reinforce and stabilise the nasal airway.
In children, enlarged adenoids can cause persistent obstructions, snoring, mouth breathing, or recurring ear issues. Removing the adenoids can often resolve these symptoms and improve the child’s overall breathing and comfort.
Dr Barrie Tan was the former Head of the Department of Otolaryngology (ENT) at Singapore General Hospital and has dedicated his career to improving his patients’ ENT health and quality of life.
Contact us for more information on nasal obstruction or to book an appointment.
Your recovery timeline and experience will vary depending on the specific procedure you undergo and the underlying cause of your nasal obstruction.
Following nasal surgery, it is common to experience some temporary symptoms as your body heals. You may notice:
These symptoms typically improve with time and consistent care. Your doctor will provide a clear plan, which often includes saline nasal rinses and prescribed sprays to help manage crusting and support the healing process. While many patients feel comfortable resuming light daily activities within a few days, it is important to avoid strenuous exercise and nose-blowing during the initial healing phase.
While procedures like a septoplasty or turbinate reduction can improve airflow, keep in mind that internal swelling may take several weeks to fully subside. Procedures involving structural repair or cartilage work, such as nasal valve surgery, may require a longer recovery period. Regular follow-up appointments and occasional office cleanings are often essential to ensure your nose heals correctly.
As with any surgical procedure, there are potential risks. These can include bleeding, infection, scarring, persistent dryness, reduced sense of smell, or changes in the shape of the nose. In rare instances, symptoms may recur, or additional care might be needed.
Barrie Tan, ENT Head & Neck Surgery, can help determine why your nose feels blocked and recommend treatments based on your symptoms and the underlying cause of your nasal obstruction.
At Gleneagles Hospital in Singapore, Dr Barrie Tan sees patients with long-term or recurring nasal blockages, sinus problems, nasal polyps, a deviated septum, enlarged turbinates and suspected nasal valve collapses. Assessment may include a nasal endoscopy, scans when needed, and a clear explanation of suitable medical or surgical treatment options.
If your blocked nose keeps coming back, affects your sleep, or does not improve with the usual care, contact Barrie Tan ENT Head & Neck Surgery for a consultation.
MBBS, MRCS (Edinburgh), MMed (Otorhinolaryngology), FAMS
Dr Barrie Tan is an ENT specialist at Gleneagles Hospital, Singapore, with more than 20 years of clinical and surgical experience. He previously served as Head of ENT and Director of the Centre for Hearing and Ear Implants at Singapore General Hospital. The information provided is not intended as medical advice. More about our medical experts.
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