What are Nasal Polyps?

Nasal polyps are soft, usually painless, non-cancerous growths that develop from the inflamed lining of the nasal cavity or paranasal sinuses. They are commonly associated with chronic rhinosinusitis with nasal polyps (CRSwNP), a long-lasting inflammatory condition. Small polyps may cause few symptoms, while larger or multiple polyps can obstruct nasal airflow, reduce the sense of smell, disturb sleep, and interfere with sinus drainage. Nasal polyps associated with CRSwNP commonly affect both sides of the nose.

What is the Importance of Timely Treatment?

Timely evaluation and treatment can relieve nasal obstruction, improve breathing and smell, control chronic sinus inflammation, and improve quality of life. Assessment may also identify associated conditions such as asthma and allergic rhinitis. Many patients can be managed with medication, while those with persistent symptoms despite appropriate treatment may require endoscopic sinus surgery or biologic therapy, depending on disease severity and eligibility.

What are the Common Symptoms of Nasal Polyps?

Persistent blocked or stuffy nose
Difficulty breathing through the nose
Runny nose or nasal discharge
Postnasal drip
Reduced or complete loss of sense of smell
Reduced sense of taste
Facial pressure or fullness
Headache or facial discomfort
Recurrent sinus infections
Snoring or disturbed sleep
Mouth breathing
A sensation of mucus in the throat
Nasal voice or altered voice quality
Fatigue related to chronic nasal and sinus symptoms

Causes and Risk Factors of Nasal Polyps

Causes

The exact cause of nasal polyps is not fully understood. They are strongly associated with chronic inflammation of the nasal and sinus lining.
Chronic rhinosinusitis with nasal polyps may involve type 2 inflammation and other immune pathways.
Associated conditions, including asthma, allergic rhinitis, and aspirin-exacerbated respiratory disease, may contribute to the inflammatory process.
Genetic susceptibility and certain underlying conditions may influence the risk of developing nasal polyps.

Risk Factors

Chronic rhinosinusitis
Asthma
Aspirin-exacerbated respiratory disease or respiratory reactions to certain NSAIDs
Allergic rhinitis, where present
Family history of nasal polyps
Cystic fibrosis, particularly in children and young people
Certain immune or inflammatory disorders
Genetic susceptibility to chronic sinonasal inflammation

Latest Research and Technologies in the Treatment of Nasal Polyps in Thailand

Current management of chronic rhinosinusitis with nasal polyps (CRSwNP) combines medical treatment, endoscopic sinus surgery when indicated, and long-term monitoring. Intranasal corticosteroids and saline irrigation commonly control inflammation and relieve symptoms. Biologic therapies have expanded treatment options for selected patients with severe CRSwNP by targeting specific inflammatory pathways to reduce polyp size and nasal obstruction and potentially decrease the need for systemic corticosteroids or repeated surgery.

Treatment options for Nasal Polyps

Endoscopic Sinus Surgery : Consider functional endoscopic sinus surgery when symptoms and polyps remain uncontrolled despite appropriate medical treatment or when significant obstruction is present. The procedure uses an endoscope and specialised instruments through the nostrils to remove polyps and open blocked sinus passages.

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Clinical assessment:
- Medical and Symptom History: Evaluation includes nasal blockage, discharge, postnasal drip, loss of smell, facial pressure, recurrent sinus infections, sleep disturbance, symptom duration, previous sinus surgery, medication use, allergies, asthma, aspirin or NSAID reactions, and other relevant medical conditions.
- Nasal and ENT Examination: An ENT specialist examines the nasal passages and surrounding structures for obstruction, inflammation, discharge, polyps, septal abnormalities, or other causes of nasal symptoms.
- Assessment of Associated Conditions: Clinicians may evaluate patients for asthma, allergic rhinitis, aspirin sensitivity, immune disorders, cystic fibrosis, or other conditions that may contribute to chronic sinonasal inflammation.
- Smell and Functional Assessment: Assess the sense of smell, nasal obstruction, sleep quality, and overall symptom burden to understand disease severity and monitor treatment response.
Imaging Tests:
- CT Scan of the Paranasal Sinuses: Provides detailed information about the extent of sinus inflammation, polyp burden, blocked sinus drainage pathways, and relevant anatomical variations. It is particularly useful when surgery is being considered.
- MRI: May be used when there is an atypical presentation, concern about extension into surrounding structures, or a need to distinguish inflammatory polyps from other soft-tissue lesions.
- Nasal Endoscopy: Provides direct visualisation of the nasal cavity and sinus openings and is an important tool for diagnosis and follow-up.
- Allergy Testing: Consider skin-prick testing or blood-based allergy testing when allergic inflammation is suspected.
- Additional Testing: Blood tests, immune evaluation, or testing for conditions such as cystic fibrosis may be considered in selected patients, particularly children or patients with unusual or severe disease.

Medicines for nasal polyps primarily aim to reduce inflammation, improve nasal breathing, shrink polyps, and control associated sinus disease. Intranasal corticosteroids such are commonly used as first-line medical therapy. Saline nasal irrigation may be used alongside topical treatment. Doctors may prescribe short courses of oral corticosteroids for significant or severe disease, while reserving antibiotics for appropriate bacterial infections rather than routine polyp treatment.

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Hospitals for Nasal Polyps in Thailand

Sikarin Hospital

Bangkok, Thailand

Apart from in-detail treatment procedures available, Sikarin Hospital located in Bangkok, Thailand has a wide variety of facilities available for International Patients. Some of the facilities which are provided by them are Airport Transfer, Choice of Meals, Interpreter, SIM, TV inside room. Also listed below are some of the most prominent infrastructural details:

Sikarin Hospital has a 258-bed capacity.
The hospital caters to the healthcare needs of both local and international patients.
Dedicated and skilled, experienced healthcare professionals are the strength of the organization.

It has also received many awards and certifications and some of them are:

APSIC CSSD Center of Excellence Award (2017-18)
Accreditation by the Joint Commission International
HA-Hospital/Healthcare Accreditation
HACCP Certificate of Registration
The Best Under a Billion Award
ISO 14001 Environment Management System
ISO 9001 Quality Management System

The various clinics and centers of Sikarin Hospital are as follows:

Pediatric Institute
Orthopedic Institute
Dental Center
Health Check-up Center
Heart Disease Center
Cerebral and Nervous System Center
Internal Medicine Clinic
Diagnostic Radiology Center
Diagnostic Laboratory
Endoscopic Surgery Center
International Medical Center
Emergency Medical Center
Sikarin Beauty Center
Eye Center
Rehabilitation Center
Women’s Health Center
Ear, Nose and Throat Center
Specialized Internal Medicine Center
Center for Gastrointestinal and Liver Diseases

The medical technology present in Sikarin Hospital is outlined here:

MRI (Magnetic Resonance Imaging) magnetic resonance imaging
Hybrid Operating Room
Endoscopic Surgery - Gastrointestinal medical technology with tiny capsules
S.R. Laboratory
Cardiac Catheterization Lab
Dental Operating Microscope, an innovative endoscopic root canal treatment
128-Slice CT Scan
ORTHOPANTOMOGRAPH OP 3D oral X-ray machine
Digital Mammogram
Optical Coherence Tomography
INFRARED (IR) IMAGING Surgical Technology “Cure Cancer” – Direct, Accurate, Fast
3D endoscopic surgery technology
Laparoscopic Surgery
Dental Aerosol Suction Dental Intraoral Aerosol Remover
Comprehensive Dental Center
iTeroElement 5D

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Yanhee International Hospital

Bangkok, Thailand

Yanhee International Hospital located in Bangkok, Thailand is accredited by JCI. Also listed below are some of the most prominent infrastructural details:

The hospital is located in 10 stories and 4 connected buildings.
International patient care is provided with accommodation, flight booking, airport transfer, choice of meals available.
There is a Cosmetic and Beauty Center and a 24/7 Dental Center in the hospital.
Some of the important healthcare specialties are Cardiac Sciences, ENT, Gastroenterology, General Surgery, Gynecology, Neurology, and Orthopedics etc.
The healthcare delivery by the Yanhee International Hospital stands strong with:
155 Physicians
183 Medical Specialists
2000 nurses and other healthcare personnel

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MALI Interdisciplinary Hospital

Bangkok, Thailand

MALI Interdisciplinary Hospital located in Bangkok, Thailand is accredited by JCI. Also listed below are some of the most prominent infrastructural details:

Operating Room
X-Ray Department
Laboratory
Inpatient Department
Emergency Department

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Why Choose Thailand for Nasal Polyps Treatment?

Experienced ENT and Rhinology Specialists: Major Thai hospitals may provide access to ENT specialists and rhinologists experienced in managing chronic sinus disease and recurrent nasal polyps.
Advanced Diagnostic Facilities: Many centres offer nasal endoscopy, CT of the paranasal sinuses, MRI when required, allergy evaluation, and other investigations to determine the extent and underlying factors associated with nasal polyps.
Minimally Invasive Treatment Options: Selected hospitals provide functional endoscopic sinus surgery and other endoscopic techniques for patients who do not obtain adequate relief from medical treatment.
Comprehensive Medical Management: Patients may have access to intranasal corticosteroids, systemic treatment when appropriate, biologic therapy for selected severe CRSwNP, allergy and asthma management, and postoperative follow-up within a multidisciplinary care pathway.
International Patient Support: Major Thai hospitals may provide medical-record review, specialist coordination, treatment scheduling, visa and travel assistance, accommodation support, interpretation, and follow-up services for international patients.

Frequently Asked Questions

Recovery depends on whether nasal polyps are treated with medicines or surgery. Symptoms may gradually improve with medical treatment over several weeks, while recovery after endoscopic sinus surgery often takes several weeks. Nasal congestion, crusting, or reduced smell may persist temporarily after surgery. Long-term maintenance treatment and follow-up may be necessary because nasal polyps can recur.

Yes. Nasal polyps generally do not affect the ability to walk. However, severe nasal obstruction, chronic sinus symptoms, poor sleep, or associated asthma may cause fatigue or reduced exercise tolerance. After sinus surgery, you may need to restrict strenuous physical activity temporarily, according to your surgeon's instructions.

Many advanced Thai ENT centres provide nasal endoscopy, CT sinus imaging, allergy evaluation, advanced endoscopic sinus surgery, postoperative endoscopic monitoring, and medical treatments for chronic rhinosinusitis with nasal polyps. Selected centres may also provide biologic therapies and multidisciplinary management for severe disease.

Many major Thai hospitals have international-patient departments that may assist with medical records, specialist consultations, treatment coordination, visa documentation, travel arrangements, accommodation, interpretation, and follow-up care. Services vary between hospitals.

Look for an ENT or rhinology specialist experienced in chronic rhinosinusitis and nasal polyps. Important factors include access to nasal endoscopy, CT sinus imaging, appropriate medical therapy, endoscopic sinus surgery when indicated, management of asthma and allergies, and long-term follow-up. For severe recurrent disease, access to biologic therapy may also be relevant.

There is no single success rate for nasal polyps treatment because outcomes depend on inflammation severity, polyp size and extent, associated asthma or allergy, prior surgery, treatment approach, and individual response. Medical treatment can control symptoms in many patients, while surgery can improve obstruction and sinus drainage in appropriately selected patients. However, nasal polyps can recur, so long-term medical treatment and monitoring may be required.

Many tertiary Thai hospitals have ENT and rhinology specialists experienced in evaluating and treating nasal polyps. Complex or recurrent cases may require coordinated care among ENT specialists, allergists, pulmonologists, radiologists, and other specialists, depending on associated conditions.

Risks depend on the treatment used. Nasal corticosteroids can cause local irritation, dryness, or nosebleeds in some patients, while repeated systemic corticosteroids can have more significant side effects. Endoscopic sinus surgery may involve bleeding, infection, scar formation, persistent symptoms, recurrence, or, rarely, injury to nearby structures such as the orbit or skull base.

Consult an ENT specialist for an assessment of persistent nasal blockage, reduced sense of smell, or other ongoing sinus symptoms. The evaluation may include nasal endoscopy and, when indicated, CT imaging. Treatment may involve nasal corticosteroids, saline irrigation, or other options based on disease severity. Seek urgent medical attention if you develop vision changes, swelling around the eye, severe or rapidly worsening headache, or other signs of a serious complication.

Nasal polyps do not usually cause permanent external deformities. However, persistent or severe disease may lead to ongoing nasal obstruction, reduced sense of smell, sleep disturbance, and recurrent sinus symptoms. Rarely, complications of severe sinus disease may affect nearby structures, including the eyes. Appropriate treatment and follow-up can help control symptoms and reduce the risk of complications.

Yes. Nasal polyps can significantly affect quality of life by causing persistent nasal blockage, reduced or absent sense of smell, sleep disturbance, facial pressure, recurrent sinus symptoms, fatigue, and difficulty exercising or concentrating. Associated asthma and chronic inflammatory disease may further affect daily functioning.

Untreated symptomatic nasal polyps can cause persistent nasal obstruction, reduced sense of smell, recurrent or chronic sinus symptoms, sleep disturbance, and impaired quality of life. Severe chronic sinus inflammation may also worsen associated respiratory conditions such as asthma. In rare cases, severe sinus disease can cause complications involving structures around the eyes or other nearby areas.

Nasal polyps cannot always be prevented because their exact cause is not fully understood. However, managing allergies and asthma, using prescribed nasal treatments consistently, avoiding tobacco smoke and other nasal irritants, maintaining good sinus hygiene, and following an ENT specialist's long-term treatment plan may reduce symptoms and the risk of recurrence. Saline nasal irrigation may also help when performed properly with safe water.

Nasal polyps are more common in adults and are particularly associated with chronic rhinosinusitis, asthma, allergies, and certain inflammatory or genetic conditions. People with cystic fibrosis and some other chronic inflammatory disorders may also have an increased risk. Family history may contribute to susceptibility.

Author

Pragun Gupta

Doctor of Pharmacy

1 Year of Experience

Pragun Gupta is a Doctor of Pharmacy (Pharm. D.) professional from Teerthanker Mahaveer University with hands-on experience in clinical pharmacology, clinical research, and evidence-based medical writing. Through her clinical and research exposure, she has developed a strong interest in pharmacoeconomics, pharmacology, therapeutics, and pharmacovigilance.

As a medical writer, she works on medical and scientific research articles, patient education materials, and healthcare-focused content. Her clinical research and evidence-based writing experience enables her to translate complex medical information into clear, accurate, patient-friendly content while maintaining scientific credibility and medical accuracy. Her primary aim is to make healthcare information accessible and easy for patients and general readers to understand.

Reviewer

Dr Sameer Sethi

Otolaryngologist

22 Years of Experience

Dr. Sethi has worked as a Senior Consultant, ENT/Otorhinolaryngology at Fortis Hospital, Shalimar Bagh Currently he is a member of the Medical Council of India (MCI), Delhi Medical Council and Association of Otolaryngologists of India (AOI). View More

Last Reviewed - January 2026

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Nasal Polyps Treatment in Thailand

What are Nasal Polyps?

What is the Importance of Timely Treatment?

What are the Common Symptoms of Nasal Polyps?

Causes and Risk Factors of Nasal Polyps

Latest Research and Technologies in the Treatment of Nasal Polyps in Thailand