Why Is My Nose Always Blocked? | Torrance ENT Guide
Dr. Nathan Eivaz
10/7/2026
Why Is My Nose Always Blocked? Common Causes of Nasal Obstruction
Feeling like your nose is always blocked can be frustrating, especially when congestion doesn't go away after a cold or seems to affect the same side of your nose over and over again. You may find yourself breathing through your mouth, waking up congested, struggling to breathe comfortably during exercise, or wondering why nasal sprays only provide temporary relief.
Persistent nasal blockage isn't always caused by a cold. Nasal obstruction can have several possible causes, ranging from allergies and sinus inflammation to structural problems such as a deviated septum or nasal valve collapse.
At Beach Cities ENTS, Dr. Brett Levine and Dr. Nathan Eivaz evaluate patients with nasal congestion and breathing problems in Torrance and throughout the South Bay and greater Los Angeles area. Identifying why your nose feels blocked is an important first step toward finding the appropriate treatment.
What Is Nasal Obstruction?
Nasal obstruction occurs when airflow through one or both sides of the nose is restricted.
Some people describe the problem as a stuffy nose, but nasal obstruction and temporary nasal congestion aren't necessarily the same thing. A cold may leave you congested for several days, while an underlying nasal or sinus condition can make it difficult to breathe through your nose for weeks, months, or even years.
Symptoms associated with nasal obstruction can include:
- Difficulty breathing through one or both nostrils
- A constantly stuffy or blocked nose
- Mouth breathing
- Snoring
- Difficulty sleeping
- Reduced sense of smell
- Trouble breathing comfortably during exercise
- Facial pressure
- Recurrent sinus symptoms
If you frequently find yourself wondering, “Why can't I breathe through my nose?” there may be more going on than temporary congestion.
Why Is My Nose Always Blocked?
There isn't one single cause of chronic nasal obstruction. The problem may come from swelling and inflammation inside the nose, a physical narrowing of the nasal airway, or a combination of both.
Here are several common possibilities.
1. A Deviated Septum
Your nasal septum is the wall of cartilage and bone that separates the left and right sides of your nose.
Ideally, it sits relatively close to the center. However, the septum can be crooked or displaced to one side. This is known as a deviated septum.
When the deviation significantly narrows one nasal passage, you may notice that one side of your nose is consistently harder to breathe through than the other.
Some people are born with a deviated septum, while others develop one following an injury to the nose.
Symptoms can include chronic nasal obstruction, mouth breathing, difficulty sleeping, snoring, and a persistent sensation that one nostril isn't getting enough air.
If the deviation is severe enough to interfere with breathing and symptoms don't respond adequately to conservative treatment, an ENT may discuss whether septoplasty is appropriate.
2. Allergies and Rhinitis
Sometimes the problem isn't the structure of the nose at all. It's inflammation.
Allergic rhinitis can cause the tissues inside your nose to become swollen, making the nasal passages feel congested or blocked. You may also experience sneezing, a runny nose, itchy eyes, or postnasal drip.
For patients in Torrance and throughout the South Bay and greater Los Angeles area, nasal and sinus symptoms aren't necessarily limited to one short allergy season. Southern California's climate can contribute to exposure to environmental allergens at different times throughout the year.
There are also forms of nonallergic rhinitis, in which irritants or other triggers cause nasal symptoms even when allergies aren't responsible.
Determining what's causing the inflammation is important because treatment for inflammatory congestion can be very different from treatment for a structural nasal blockage.
3. Chronic Sinusitis
If your blocked nose comes with facial pressure, thick nasal drainage, postnasal drip, recurrent sinus infections, or a decreased sense of smell, your sinuses may be part of the problem.
Chronic sinusitis involves ongoing inflammation of the nose and sinus cavities. Swelling can interfere with normal sinus drainage and contribute to persistent congestion.
Some patients describe feeling like they are constantly dealing with a sinus infection or that their symptoms improve temporarily before returning.
If you're experiencing recurring or persistent sinus symptoms, an ENT evaluation can help determine whether the problem is related to inflammation, infection, nasal anatomy, nasal polyps, or another underlying issue.
4. Nasal Polyps
Nasal polyps are soft, noncancerous growths that develop inside the nasal passages or sinuses.
Small polyps may cause few symptoms, but larger polyps can interfere with airflow and sinus drainage. They may contribute to:
- Persistent nasal congestion
- Difficulty breathing through the nose
- Postnasal drip
- Facial pressure
- Recurrent sinus infections
- Decreased sense of smell
- Loss of taste
Nasal polyps are often associated with chronic inflammation, which is why simply treating temporary congestion may not solve the underlying problem.
5. Nasal Valve Collapse
Another potential cause of a constantly blocked nose is nasal valve collapse.
The nasal valve is one of the narrowest portions of the nasal airway. If this area becomes too narrow or the sidewall of the nose collapses inward when you breathe, airflow can become restricted.
You might notice that your nostril seems to pull inward when you take a deep breath or that breathing improves when you gently pull the side of your cheek outward.
Because nasal valve collapse is a structural problem, it can easily be mistaken for ordinary nasal congestion.
Beach Cities ENTS offers evaluation and treatment for nasal airway obstruction, including minimally invasive treatment options for appropriate patients.
6. Enlarged Turbinates
Inside your nose are structures called turbinates, which help warm, filter, and humidify the air you breathe.
When the turbinates become chronically swollen or enlarged, however, they can reduce the amount of space available for air to move through the nasal passages.
Turbinate enlargement can occur alongside allergies, chronic rhinitis, a deviated septum, and other nasal conditions.
Because more than one problem can exist at the same time, a proper nasal examination is important before deciding how persistent obstruction should be treated.
Why Is One Side of My Nose Always Blocked?
It's normal for airflow to naturally alternate somewhat between nostrils throughout the day. This is called the nasal cycle.
But if the same side consistently feels blocked, particularly over a long period of time, there may be an underlying structural issue such as a deviated septum or another source of narrowing.
Persistent one-sided nasal obstruction deserves an evaluation, especially if it is worsening or accompanied by other concerning symptoms.
Can Nasal Obstruction Affect Your Sleep?
It can.
When you can't breathe comfortably through your nose, you may compensate by breathing through your mouth at night. Nasal obstruction can also contribute to snoring and disrupted sleep.
However, snoring can have several causes. Symptoms such as loud habitual snoring, choking or gasping during sleep, or significant daytime sleepiness may warrant an evaluation for obstructive sleep apnea rather than assuming the nose is the only problem.
An ENT evaluation can help determine whether nasal obstruction is contributing to your nighttime breathing difficulties and whether additional sleep evaluation is appropriate.
Why Doesn't Nasal Spray Fix My Blocked Nose?
It depends on what's causing the obstruction.
A medication that reduces inflammation may be helpful when swelling from allergies or rhinitis is responsible for the problem. But medication can't physically straighten a significantly deviated septum.
Likewise, structural problems such as nasal valve collapse may require a different treatment approach.
There is another important consideration: certain decongestant nasal sprays can cause worsening congestion when they're used too frequently or for too long. This can create a cycle in which you feel increasingly dependent on the spray to breathe.
If you feel like you can't breathe without nasal spray, talk with an ENT rather than continually increasing how often you use it.
How Does an ENT Determine What's Blocking Your Nose?
The first step is determining where the obstruction is occurring and why.
At Beach Cities ENTS, an evaluation may include a discussion of your symptoms and medical history along with an examination of your nose and nasal passages. Depending on your symptoms, additional evaluation may be recommended to look for inflammation, structural narrowing, sinus disease, polyps, or other abnormalities.
This distinction matters.
Two patients can both say, “My nose is always blocked,” while having completely different underlying problems. One may have allergies and swollen nasal tissue, while another has a deviated septum and nasal valve collapse.
Their treatment plans shouldn't necessarily be the same.
What Treatments Are Available for Nasal Obstruction?
Treatment depends on the cause.
For some patients, medical management such as saline rinses, appropriate nasal sprays, allergy treatment, or other medications may be enough to improve nasal breathing.
When a structural problem or chronic sinus condition is responsible, other treatments may be considered. Depending on the diagnosis, treatment may involve addressing a deviated septum, enlarged turbinates, nasal valve narrowing, chronic sinus disease, or another underlying condition.
Beach Cities ENTS offers medical, minimally invasive, and surgical treatment options for a range of nasal and sinus conditions. Your ENT can recommend an approach based on what's actually causing your symptoms.
The goal isn't simply to temporarily make your nose feel less stuffy. It's to determine what's interfering with airflow and address the underlying problem.
When Should You See an ENT for a Blocked Nose?
- Consider scheduling an ENT evaluation if:
- Your nose feels blocked for weeks or months
- You consistently have difficulty breathing through one nostril
- You frequently breathe through your mouth
- Congestion keeps returning despite treatment
- You experience recurrent sinus infections
- Your sense of smell has decreased
- You have persistent postnasal drip or facial pressure
- Nasal breathing interferes with sleep or exercise
- You rely heavily on nasal sprays to breathe
- You have persistent or worsening one-sided symptoms
You don't have to determine whether you have a deviated septum, sinusitis, nasal polyps, allergies, or nasal valve collapse on your own. That's what the evaluation is for.
Breathe Easier With Beach Cities ENTS
If you're tired of wondering why your nose is always blocked, Dr. Brett Levine and Dr. Nathan Eivaz at Beach Cities ENTS can evaluate your nasal airway and help identify what's making it difficult to breathe.
Beach Cities ENTS provides ENT care in Torrance, California, serving patients throughout the South Bay and greater Los Angeles area.
Whether your symptoms are related to chronic nasal congestion, a deviated septum, nasal valve collapse, sinus problems, or another condition, getting an accurate diagnosis can help you understand your treatment options and take the next step toward breathing more comfortably.
Contact Beach Cities ENTS to schedule an appointment with an ENT specialist in Torrance, CA
Recent Posts
Why Is My Nose Always Blocked? | Torrance ENT Guide
Learn common causes of a blocked nose, including a deviated septum, sinusitis, and nasal obstruction, and when to see a South Bay ENT.
What Causes Eustachian Tube Dysfunction in Adults?
Explore causes of Eustachian tube dysfunction in adults, common symptoms, and when balloon dilation may help improve chronic ear pressure or blockage.
Why South Bay Residents Have Year-Round Sinus Issues & When to See a Specialist
Living in Torrance or the South Bay? Year-round sinus problems are common — and often fixable. Learn when it's time to see an ENT specialist near you.