Chronic Nasal Congestion Treatment in Gangnam, Seoul

Medically reviewed by Dr. Kim Yoo Suk, MD · Board-certified otolaryngologist · Former professor, Yonsei & Ajou University · Consultations in English

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Chronic nasal congestion is a blocked or stuffy nose lasting more than about 12 weeks. It is a symptom, not a diagnosis, and common causes include allergic or non-allergic rhinitis, enlarged turbinates, a deviated septum, sinusitis, polyps and decongestant spray overuse. An ENT examination with nasal endoscopy identifies the cause so treatment can be targeted.

Chronic Nasal Congestion – ENT care at Gangnam Yonsei ENT Clinic in Gangnam, Seoul

What is chronic nasal congestion?

Chronic nasal congestion is a persistent feeling of blockage or reduced airflow through the nose. It may be constant, alternate sides, or worsen at night. Because many different conditions produce the same sensation, the key step is finding out what is narrowing the airway.

Symptoms that often come with it

  • Mouth breathing, dry mouth and sore throat on waking
  • Snoring and poor-quality sleep
  • Reduced smell and taste
  • Postnasal drip and frequent throat clearing
  • Ear fullness or popping
  • Headache or facial pressure

Common causes

Mucosal (swelling) causes

  • Allergic rhinitis from dust mites, pollen or pets
  • Non-allergic vasomotor rhinitis triggered by temperature or odors
  • Rebound congestion from decongestant sprays
  • Chronic sinusitis and nasal polyps
  • Hormonal changes, including pregnancy, and some medications

Structural causes

  • A deviated septum
  • Enlarged inferior turbinates
  • Nasal valve collapse at the side wall of the nose
  • Enlarged adenoids in children
  • Rarely, a tumor, usually causing one-sided blockage

How it is diagnosed at our Gangnam clinic

It helps to note before your visit when the blockage started, whether it is seasonal, which medicines you have used and for how long, and whether anyone in your family has allergies or asthma. Photos of medication boxes from home are useful if you do not know the drug names in English.

Dr. Kim starts with a careful history, including which side is blocked, how long, and which sprays you have tried. Nasal endoscopy lets him inspect the septum, turbinates, sinus openings and the back of the nose in a few minutes. Depending on findings, an allergy test or a sinus CT scan may follow. Thanks to the clinic's same-day system, many patients finish testing and consultation in one visit.

Treatment options

Treatment depends on the cause and always starts with the least invasive effective option:

  • Saline irrigation and correct use of steroid sprays
  • Antihistamines or other allergy medication
  • Stopping decongestant sprays with a supervised weaning plan
  • Allergen immunotherapy for dust mite allergy

When a structural problem is the main cause and medication is not enough, procedures under local anesthesia may help, such as turbinate reduction surgery, septoplasty or, for collapse of the side wall, nasal valve reconstruction. Many patients need only medical treatment once the cause is clear.

When to see an ENT

See an ENT if your nose has been blocked for more than a few weeks, if you depend on decongestant sprays, or if sleep is affected. Seek prompt assessment for blockage on one side only with bleeding, crusting, a bad smell, facial pain, numbness or eye symptoms.

Seeing Dr. Kim in English

Congestion is the core focus of rhinology, the subspecialty Dr. Kim Yoo Suk practiced and taught as a former professor at Yonsei and Ajou universities. He explains the cause in plain English and recommends only the treatment you need. Our English-speaking ENT page explains visits for international patients.

Frequently asked questions

Why is my nose more blocked at night?

When you lie down, blood flow to the nasal lining increases and the turbinates swell, especially on the lower side. Dust mites in bedding and dry heated air can add to this. Raising the head of the bed slightly and treating any allergy often helps.

Is it safe to use decongestant spray every day?

No. Decongestant sprays such as oxymetazoline should only be used for a few days. Longer use causes rebound swelling and dependence. If you have been using one for weeks, Dr. Kim can help you stop safely with alternative treatment.

Do I need a CT scan for a blocked nose?

Not always. Many causes can be diagnosed with history and nasal endoscopy alone. A CT scan is useful when sinus disease, polyps, a tumor or surgical planning is being considered, and Dr. Kim will explain why if he recommends one.

Your doctor

Dr. Kim Yoo Suk, MD
Board-certified otolaryngologist (ENT). Former clinical assistant professor at Yonsei University and assistant professor at Ajou University School of Medicine. Nose & sinus subspecialist who treats all ear, nose and throat conditions.

Consultations in English. Guide for international patients →

Visit us in Gangnam

2F HS Tower, 703 Seolleung-ro, Gangnam-gu, Seoul
Gangnam-gu Office Station (Line 7 / Suin-Bundang), Exit 3-1

Mon, Tue, Thu, Fri 9:00–19:00
Wed 14:00–19:00 · Sat 9:00–14:00
Closed Sundays & public holidays

This page is general medical information written and reviewed by an ENT specialist. It is not a diagnosis. Symptoms differ between people — please see a doctor for an examination. In an emergency in Korea, call 119.