Nasal Obstruction

Difficulty breathing through a blocked nose

Table of Contents

Quick Facts

  • Type: Ear, nose, and throat condition
  • Common causes: Congestion, deviated septum, polyps
  • Pattern: One or both sides; constant or intermittent
  • Treatment: Depends on the underlying cause

Overview

Nasal obstruction is the sensation that air cannot move freely through one or both sides of the nose. It can be temporary, as with a cold, or long-lasting when caused by structural problems or chronic inflammation. While usually not dangerous, persistent nasal obstruction can disrupt sleep, reduce sense of smell, and lower quality of life.

The nose can become blocked because the lining swells, because the passage is structurally narrowed, or because something is physically in the way. Identifying the cause is the key to effective treatment, which ranges from simple sprays to surgery for structural problems.

Symptoms

Nasal obstruction may affect one side, both sides, or alternate between sides. Related symptoms include:

  • Difficulty breathing through the nose, especially when lying down
  • A feeling of fullness or pressure in the face
  • Mouth breathing and snoring
  • Reduced sense of smell or taste
  • Postnasal drip or runny nose
  • Disturbed sleep or daytime tiredness
  • Frequent need to clear the nose

Causes

Nasal obstruction has many possible causes, which can be grouped into swelling, structural narrowing, and blockage:

  • Inflammation and congestion: Colds, sinus infections, and allergic rhinitis cause the lining to swell.
  • Deviated septum: A crooked wall between the nostrils narrows one or both passages.
  • Enlarged turbinates: Swelling of the structures that warm and humidify air.
  • Nasal polyps: Soft, noncancerous growths in the nose or sinuses.
  • Foreign body: Especially in young children.
  • Enlarged adenoids: Common in children.
  • Overuse of decongestant sprays, which can cause rebound congestion.

Diagnosis

A clinician reviews your symptoms and examines the nose to find the cause.

  • Nasal examination with a light or speculum, sometimes after a decongestant spray.
  • Nasal endoscopy: A thin scope to view the deeper nasal passages and sinuses.
  • Allergy testing if allergic rhinitis is suspected.
  • CT scan for chronic sinus problems or suspected polyps.

Treatment

Treatment targets the underlying cause.

  • Saline rinses and sprays to clear and moisturize the nose.
  • Nasal corticosteroid sprays to reduce swelling from allergies, polyps, or chronic inflammation.
  • Antihistamines for allergy-related blockage.
  • Short-term decongestants, used only briefly to avoid rebound congestion.
  • Antibiotics for bacterial sinus infections when appropriate.
  • Removal of a foreign body when present.
  • Surgery: Procedures to straighten a deviated septum, reduce turbinates, or remove polyps when medication is not enough.

Prevention

  • Manage allergies with avoidance measures and prescribed treatments
  • Use saline sprays to keep nasal passages moist
  • Avoid long-term use of over-the-counter decongestant sprays
  • Keep indoor air clean and humidified when it is very dry
  • Treat colds and sinus infections promptly

When to See a Doctor

See a doctor if nasal obstruction:

  • Lasts more than a couple of weeks or keeps coming back
  • Affects only one side persistently
  • Comes with frequent nosebleeds, facial pain, or loss of smell
  • Disrupts your sleep or daily life

Seek prompt care for a child who may have placed an object in the nose, and seek emergency care for any difficulty breathing or a one-sided, foul-smelling discharge that does not clear.

Related Topics

Deviated Nasal Septum

A crooked nasal wall that narrows the airway.

 Allergic Rhinitis

Allergy-related nasal swelling and congestion.

 Nasal Congestion

The blocked, stuffy feeling itself.

 Runny Nose

Often accompanies a blocked nose.

Frequently Asked Questions

What is the most common cause of a blocked nose?

Short-term blockage is most often from a cold, sinus infection, or allergies that swell the nasal lining. Long-lasting obstruction is frequently caused by a deviated septum, enlarged turbinates, or nasal polyps. The pattern and duration help point to the cause.

Why does my nose block on one side at a time?

It is normal for airflow to shift between nostrils through the day in what is called the nasal cycle, so mild alternating blockage is usually not a concern. Persistent one-sided blockage, however, can signal a deviated septum, a polyp, or another structural problem and is worth evaluating.

Can decongestant sprays make a blocked nose worse?

Yes. Over-the-counter decongestant sprays can cause rebound congestion if used for more than a few days, leaving the nose more blocked than before. They should be used only short term and according to the label or a clinician's advice.

When does nasal obstruction need surgery?

Surgery is considered when blockage is caused by a structural problem such as a deviated septum, enlarged turbinates, or polyps and does not improve with sprays and other medication. Procedures aim to widen the airway and improve nasal breathing.

Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with any questions about a medical condition.

References

  1. American Academy of Otolaryngology-Head and Neck Surgery. Nasal obstruction.
  2. Mayo Clinic. Nasal congestion.
  3. MedlinePlus, U.S. National Library of Medicine. Stuffy or runny nose.
  4. American Academy of Allergy, Asthma and Immunology. Rhinitis.