Nasal congestion is a very common complaint, described as being unable to breathe comfortably through the nose along with a feeling of fullness or pressure inside it. It may be a short problem lasting a few days with a simple cold, or it may continue for years as a sign of a structural problem in the nose. That is why the first step in treatment is finding the real cause.
What Is Nasal Congestion?
Known medically as nasal obstruction, nasal congestion is a reduction in the airflow passing through the nasal cavity. The narrowing may come from swelling of the nose’s inner lining (the mucosa) or from a narrow spot in the nose’s framework. In the first case the blockage tends to vary during the day; in the second it is usually constant and one-sided.
The nose is a far more complex organ than it seems. In the middle sits the septum, a wall of cartilage and bone that divides the right and left sides. On the side walls are the turbinates, shell-shaped structures rich in blood vessels that warm and humidify inhaled air. The narrow area just inside the nostrils is called the nasal valve; this is where airflow meets the most resistance.
Even in a healthy nose, the turbinates take turns swelling and shrinking during the day. Because of this natural rhythm, called the “nasal cycle,” one side may feel slightly more blocked than the other for a few hours. Most people never notice it, but if there is another narrowing in the nose, this cycle can turn into a clear feeling of blockage.
The complaint occurs at any age. It is more common in babies, young children, people with allergies, pregnant women and people who have had a nasal injury.
Causes of Nasal Congestion
The causes can be roughly divided into two groups: those related to swelling of the lining and structural (anatomical) causes. More than one cause may be present in the same patient.
Causes Related to Swelling of the Lining
- Colds and flu: Viral infections are the most common cause of short-term congestion; they usually clear within 7–10 days.
- Acute and chronic sinusitis: Inflammation of the sinuses causes congestion along with thick discharge and facial pressure.
- Allergic rhinitis: An allergy to pollen, dust mites or pet dander causes congestion along with sneezing and itching.
- Non-allergic rhinitis: Oversensitivity to triggers such as cold air, strong smells, cigarette smoke or spicy food.
- Medication-induced rhinitis: “Rebound” congestion that develops when decongestant sprays are used for more than a few days and worsens when the spray wears off.
- Hormonal changes: Pregnancy, puberty and an underactive thyroid can make the lining swell.
- Certain medications: Some blood pressure medicines, birth control pills and certain pain relievers can cause congestion as a side effect.
Structural Causes
- Deviated septum: A septum that is crooked from birth or after an injury is the most common structural cause.
- Turbinate hypertrophy: Permanent enlargement of the turbinates, most often the lower ones.
- Nasal polyps: Benign, grape-like growths caused by chronic inflammation.
- Nasal valve collapse: The sides of the nostrils caving inward when breathing in.
- Enlarged adenoids: Especially in children, they block the back of the nose and lead to mouth breathing.
- Nasal fractures and previous surgery: Scar bands and changes in shape that form during healing.
- Tumors: Although rare, they must always be considered when congestion is one-sided and getting worse.
Special Causes in Babies and Children
Newborns breathe mostly through the nose in the first months, so even mild congestion can make feeding difficult. A back opening of the nose that is closed from birth (choanal atresia) is a rare but important cause. In toddlers and young children, one-sided congestion with foul-smelling discharge should raise suspicion of a foreign object in the nose.
Symptoms of Nasal Congestion
Although congestion is itself a symptom, other complaints often come with it. These accompanying signs give the doctor important clues about the cause.
- Difficulty breathing through one or both sides, and mouth breathing
- Snoring, frequent waking and a dry mouth in the morning
- A reduced sense of smell and taste
- A runny nose or postnasal drip
- Fullness or pressure in the face, forehead and around the eyes
- A blocked or full feeling in the ears
- Daytime tiredness, headache and difficulty concentrating
- A nasal-sounding voice
The pattern of the blockage is also revealing. Congestion that switches between sides and worsens when lying down usually points to swelling of the lining. Congestion that is always on the same side and does not change with medication suggests a structural cause such as a deviated septum. Sneezing and itching point toward allergy, while thick yellow-green discharge and facial pain suggest sinusitis.
In children, congestion may show up as sleeping with the mouth open, snoring, restless sleep, poor appetite, frequent breaks during feeding and daytime inattention. Long-term mouth breathing can affect facial and jaw development in children, so it should not be ignored.
How Is Nasal Congestion Diagnosed?
Evaluation begins with a detailed history. The doctor asks how long the complaint has lasted, whether it affects one side or both, whether it is seasonal, about any past nasal injury, current medications and especially any habit of using decongestant sprays.
During the ENT (ear, nose and throat) examination, the outer nose and the nostril entrance are checked first, including whether the sides of the nose collapse on a deep breath. The inside of the nose is then examined with a light. Looking again after spraying a medication that temporarily shrinks the lining helps tell whether the blockage comes from swelling or from a fixed structure.
When needed, the following methods are used:
- Nasal endoscopy: A thin camera gives a detailed view of the back of the nose, the sinus openings and the nasopharynx. It is valuable for detecting polyps, enlarged adenoids and deviations at the back of the septum.
- CT scan: Requested for sinus disease, surgical planning or a suspected one-sided mass.
- Allergy tests: A skin prick test or blood test may be done when allergic rhinitis is suspected.
- Acoustic rhinometry and rhinomanometry: Objective tests that measure the width of the nasal cavity and resistance to airflow.
- Sleep study: Considered for patients with congestion who also report heavy snoring and pauses in breathing during sleep.
Patients traveling from abroad are advised to bring any previous imaging, test results and a list of the medications and sprays they use.
Treatment of Nasal Congestion
Treatment is entirely cause-directed. Rather than recommending the same spray to everyone, finding the source of the blockage and planning accordingly is both more effective and safer.
Medication and Supportive Care
For short-term congestion caused by infection, saline rinses, plenty of fluids, humid air and keeping the head slightly raised in bed bring relief. Decongestant sprays can be used during this period on a doctor’s advice and only for a few days. When bacterial sinusitis is suspected, antibiotics are started only after an examination.
In allergic and non-allergic rhinitis, corticosteroid nasal sprays are the mainstay of treatment, with antihistamines and other medications added if needed. For patients with proven allergies who do not get enough relief from medication, allergy immunotherapy may be considered. In medication-induced rhinitis, the decongestant spray is stopped in a controlled way, and corticosteroid sprays make the transition easier.
For patients with nasal polyps, the first step is usually steroid sprays and, when needed, a short course of oral steroids. Congestion that develops during pregnancy often improves on its own after delivery; medication choices during this time are made together with the obstetrician.
Everyday Measures
Whatever the cause, some simple habits help the nose work more comfortably:
- Keeping room humidity balanced in heated rooms during winter
- Not smoking and avoiding smoky environments
- Drinking enough water during the day to keep mucus from thickening
- Blowing one nostril at a time, gently
- Wearing a mask in places with heavy dust or strong chemical odors
- Exercising regularly; even a brisk walk can temporarily reduce swelling of the lining
Surgical Options
Surgery is considered for congestion that has a structural cause and persists despite medication. The appropriate method depends on where the narrowing is:
- Septoplasty: Straightening a deviated septum.
- Turbinate reduction: Shrinking enlarged turbinates while preserving their function.
- Endoscopic sinus surgery: Opening the sinus drainage pathways in chronic sinusitis and polyps.
- Adenoidectomy: Removing enlarged adenoids in children.
- Nasal valve surgery and functional rhinoplasty: Correcting narrowing caused by collapse at the nostril entrance or by the shape of the outer nose.
These procedures can often be planned together in the same session. Which method is suitable is decided individually based on examination and imaging findings.
Possible Risks and Important Considerations
Nasal congestion left untreated for a long time can lead to a dry throat from mouth breathing, gum problems, chronic sinusitis, middle ear infections and poor sleep quality. In people with heavy snoring and sleep apnea, a narrowing in the nose can make the condition worse.
Using decongestant sprays without a prescription for long periods is one of the most common mistakes. If you feel you cannot breathe without the spray, working out a plan with your doctor to stop it is usually easier and more comfortable than trying to quit on your own.
See an ENT specialist without delay in the following situations:
- One-sided congestion that keeps getting worse and does not respond to medication
- Recurrent nosebleeds or bloody discharge
- Swelling around the eye, vision changes or a severe headache
- Facial pain and swelling with a high fever
- One-sided, foul-smelling discharge in a child
- Complaints lasting more than ten days, or worsening again after starting to improve
Nasal Congestion: Frequently Asked Questions
Why does my nose get more blocked at night?
When lying down, blood flow to the head increases and the nasal lining swells more easily. Dust, mites and dry air in the bedroom can also add to the blockage. Raising the head slightly and airing the room helps most people.
Are decongestant sprays addictive?
These sprays do not cause chemical addiction, but when used for more than a few days, the lining gets used to the medication and swells even more when it wears off. This cycle leads to constant use. With a suitable plan under a doctor’s supervision, it is possible to stop the spray.
What does it mean if one side is always blocked?
Congestion that is always felt on the same side is often linked to a deviated septum or an enlarged turbinate on that side. Less commonly, a polyp or a mass may be the cause. For this reason, persistent one-sided blockage should always be examined.
How can I clear a baby’s stuffy nose?
Placing saline drops in the nose and then gently removing the mucus with a suitable nasal aspirator is usually enough. Decongestant drops and sprays should not be used in babies without a doctor’s advice. If congestion interferes with feeding or makes breathing difficult, see a pediatrician or ENT specialist.
Can surgery fix nasal congestion?
If the blockage is due to a structural cause such as a deviated septum, enlarged turbinates or polyps, the appropriate surgery clearly improves nasal breathing in most patients. Causes related to the lining, such as allergy, still need to be managed with medication after surgery.
Conclusion
Op. Dr. Tayfun Demirel, ENT specialist, evaluates children and adults with nasal congestion at the practice in Ataşehir, Istanbul, through a detailed ENT examination and, when necessary, endoscopic assessment. Once it is clear whether the blockage is related to allergy, infection or a structural cause, medication or surgical options are planned individually. Please contact the clinic to book an appointment. This article is for informational purposes only; an in-person examination is required for diagnosis and treatment.
