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Nasal Congestion – Causes & Treatment

Nasal congestion is the blockage of the nasal passages caused by swollen mucous membranes. It is commonly triggered by colds, allergies, or sinusitis.

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Things worth knowing about "Nasal Congestion"

Nasal congestion is the blockage of the nasal passages caused by swollen mucous membranes. It is commonly triggered by colds, allergies, or sinusitis.

What is Nasal Congestion?

Nasal congestion – commonly known as a stuffy or blocked nose – is one of the most frequent symptoms in both children and adults. It occurs when the blood vessels in the nasal lining become inflamed and the surrounding tissue swells, narrowing or completely blocking the nasal passages. This leads to difficulty breathing through the nose, a feeling of pressure, and reduced sense of smell.

Causes

Nasal congestion can result from a wide range of conditions and triggers:

Viral infections: The common cold and influenza are the most frequent causes. Viruses irritate the nasal mucosa and trigger an inflammatory response.
Allergies: Hay fever, dust mite allergy, or pet dander allergy can cause allergic rhinitis, leading to significant nasal swelling.
Sinusitis: Inflammation of the sinuses, whether acute or chronic, often accompanies nasal congestion.
Environmental irritants: Dry air, tobacco smoke, air pollution, or strong fragrances can inflame the nasal lining.
Rebound congestion (rhinitis medicamentosa): Overuse of decongestant nasal sprays can lead to a cycle of worsening congestion.
Structural causes: A deviated nasal septum or nasal polyps may cause persistent blockage.
Hormonal changes: Pregnancy or thyroid disorders can also contribute to nasal congestion.

Symptoms

Common symptoms associated with nasal congestion include:

Blocked or stuffy nose
Runny nose (rhinorrhea) with watery or mucous discharge
Pressure or fullness around the nose, forehead, and cheeks
Reduced or absent sense of smell
Mouth breathing, especially during sleep
Snoring and disrupted sleep
Headaches due to pressure buildup in the sinuses

Diagnosis

Nasal congestion is primarily diagnosed based on the patient's medical history and a physical examination. Depending on the suspected cause, additional tests may include:

Rhinoscopy: Direct visualization of the nasal cavity using a speculum or endoscope.
Allergy testing: Skin prick tests or blood tests to identify specific allergens.
Imaging: CT scans or X-rays of the sinuses may be used when sinusitis or structural issues are suspected.
Nasal endoscopy: A flexible camera is used to examine the nasal passages in more detail.

Treatment

Treatment depends on the underlying cause and the severity of symptoms:

General Measures

Stay well hydrated to keep the mucous membranes moist
Nasal irrigation with saline solution (e.g., using a neti pot or saline spray)
Use a humidifier to add moisture to indoor air
Avoid known triggers such as allergens or cigarette smoke

Medications

Decongestant nasal sprays: Medications such as xylometazoline or oxymetazoline rapidly constrict blood vessels and relieve blockage. They should not be used for more than 3 to 5 consecutive days to avoid rebound congestion.
Corticosteroid nasal sprays: Highly effective for allergic and chronic rhinitis; they reduce inflammation of the nasal lining over time.
Antihistamines: Useful for allergy-related congestion; available as oral tablets or nasal sprays.
Mucolytics and expectorants: Help thin and drain nasal secretions.

Surgical Options

When nasal congestion is caused by structural problems such as a deviated septum or nasal polyps, surgical intervention may be recommended to permanently improve nasal airflow.

When to See a Doctor

Nasal congestion is usually harmless and resolves on its own within a few days. However, medical attention should be sought if:

Symptoms last longer than 10 days without improvement
High fever is present
Nasal discharge is thick, yellow-green, or has an unpleasant odor
Severe facial pain or headaches occur
Visual disturbances or neck stiffness develop

References

Fokkens WJ et al. - European Position Paper on Rhinosinusitis and Nasal Polyps 2020 (EPOS 2020). Rhinology. 2020;58(Suppl S29):1-464.
Wallace DV et al. - The diagnosis and management of rhinitis: an updated practice parameter. Journal of Allergy and Clinical Immunology. 2008;122(2 Suppl):S1-84.
World Health Organization (WHO) - Allergic Rhinitis and its Impact on Asthma (ARIA) Guidelines. WHO, Geneva.

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