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What is a blocked nose?

A blocked nose, also known as nasal obstruction, is a very common problem that can affect one or both nostrils. It happens when the nasal passages become narrowed or obstructed, making it difficult to breathe freely through the nose. While occasional congestion is often due to a cold or allergies, a blockage that persists or keeps coming back may be caused by an underlying condition that needs specialist assessment.

Causes of a blocked nose

There are several possible reasons why the nose may feel constantly blocked. A deviated nasal septum, which is when the central wall inside the nose is crooked or displaced, can reduce airflow on one or both sides. Nasal polyps, which are soft, non-cancerous growths, may also obstruct breathing. Chronic sinusitis, where the sinuses remain inflamed, can cause congestion, while allergic rhinitis leads to swelling of the nasal lining when exposed to allergens such as pollen, dust, or pets. Enlarged turbinates, which are normal structures inside the nose that sometimes become swollen, can also contribute to the problem. In rarer cases, other growths or conditions may be responsible.

Treatment options

The best treatment depends on the underlying cause. An ENT specialist can carry out a detailed examination, sometimes using a small camera called a nasendoscope, to identify what is causing the obstruction. For many patients, medication such as nasal sprays or antihistamines can relieve swelling and improve breathing. Short courses of steroid sprays may also be used to reduce inflammation. If medical treatment does not provide lasting relief, surgical options may be considered, including septoplasty to correct a deviated septum, turbinate reduction, or removal of nasal polyps. Lifestyle measures such as managing allergies, using saline rinses, and avoiding irritants can also play a valuable role in controlling symptoms.

If you’re having repeated blocked nose problems, get in touch with your ENT specialist in London to book a consultation today!
020 3897 0667

When should I see a specialist about a blocked nose?
If your nose feels blocked most of the time, doesn’t improve with over-the-counter remedies, or affects your sleep and quality of life, it’s worth getting assessed.

Could my blocked nose be due to allergies?
Yes. Allergic rhinitis is a very common cause of nasal blockage, especially if symptoms are worse during certain seasons or when exposed to dust, pets, or pollen.

What tests might be done?
An ENT specialist may perform a nasal endoscopy (using a thin camera) to examine inside your nose. Occasionally, a CT scan is needed to look at the sinuses.

Is surgery always required?
Not always. Many people respond well to medication or allergy management. Surgery is only recommended if conservative treatments don’t help

Will treating a blocked nose help with snoring or sleep apnoea?

In many cases, yes. Improving nasal airflow can reduce snoring and may make treatments for sleep apnoea more effective.