Understanding Nasal Septum Deviation – What You Need To Know

Understanding the condition
Have you ever felt that one side of your nose is always blocked, no matter the season or weather? Many people dismiss this as allergies or a stubborn cold, but it could actually be a structural issue inside the nose known as a nasal septum deviation.
The nasal septum is the thin wall made of cartilage and bone that divides the two nostrils. When this wall is straight, air flows freely through both sides, allowing comfortable breathing. But when it shifts to one side, the narrowed passage can lead to chronic congestion, snoring, and even recurrent sinus infections.
A deviated septum is surprisingly common. As Dr Sandeep Uppal, ENT specialist explains, “Most people have some degree of septal deviation, but it often goes unnoticed because it may not cause symptoms.” In mild cases, breathing remains unaffected. In more significant deviations, however, airflow can be disrupted enough to affect sleep, exercise tolerance and overall wellbeing.
How it happens
In many people, a deviated septum is present from birth, a small irregularity that develops naturally during growth in the womb. Over time, the deviation can become more noticeable. Dr Uppal notes that, in his practice, “most septal deviations are developmental rather than the result of trauma or aging,” meaning the septum simply grows slightly off-centre as the nose matures.
That said, injuries can also play a role. A fall, sports accident or knock to the face, even one that seemed minor at the time, can shift the septum out of position. Repeated inflammation from allergies or chronic sinusitis may exaggerate the impact of an existing deviation, making symptoms more noticeable later in life.
Some patients come to the clinic already suspecting a deviation, often because they’ve had scans or previous medical reviews. Others only learn about it during an ENT examination. As Dr Uppal puts it, “Many patients are unaware until the deviation is identified during an ENT assessment, unless the nose is visibly crooked after trauma.”
Why awareness matters
Because the symptoms often mimic colds or hay fever, many people go years without realising their blocked nose has a structural cause. Understanding that nasal obstruction isn’t always due to inflammation — and that a deviated septum is both diagnosable and treatable, is the key to finding relief.
For those living with persistent congestion, disrupted sleep or frequent sinus infections, recognising the possibility of septal deviation can be the first step toward feeling better.
Take the next step
If you’ve been living with one-sided nasal blockage, noisy breathing, or recurrent sinus issues, a simple ENT assessment can determine whether a deviated septum is the cause. Our specialists at The ENT Clinic can help diagnose the problem and guide you through personalised treatment options.
Book an appointment to learn more.

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