Asthma is a chronic inflammatory condition of the airways causing recurrent episodes of wheezing, breathlessness, chest tightness, and coughing. Korea's seasonal fine dust and air quality swings make asthma management particularly important.
Asthma is a chronic disease affecting the airways (bronchial tubes) that carry air into and out of the lungs. In people with asthma, these airways are inflamed and sensitive, making them prone to narrowing when exposed to certain triggers β leading to difficulty breathing.
Korea's environment presents specific challenges for asthma sufferers. Seasonal fine dust (λ―ΈμΈλ¨Όμ§) and ultrafine dust (μ΄λ―ΈμΈλ¨Όμ§), often worsened by transboundary pollution in spring, are powerful asthma triggers. Yellow dust (ν©μ¬) events in spring further spike particulate levels. Dust mite allergy is also common given humid summers and heated, poorly ventilated homes in winter. An estimated 6β10% of Korea's population are affected by asthma or asthma-like symptoms.
Asthma is not curable but is highly manageable with the right medications and avoidance of triggers. Most people with asthma in Korea can live fully active lives with appropriate treatment. The key medications are reliever inhalers (used when symptoms occur) and preventer inhalers (used daily to reduce airway inflammation).
Key Points
- Reliever inhaler (usually blue/salbutamol): used during attacks to rapidly open airways
- Preventer inhaler (usually brown/steroid): used daily to reduce inflammation β prevents attacks
- Asthma attack: severe narrowing of airways β a medical emergency if severe
- Peak flow meter: measures how fast air can be expelled β used to monitor asthma control
- Korea's seasonal fine dust (λ―ΈμΈλ¨Όμ§) and yellow dust (ν©μ¬) are major asthma triggers β check the daily air quality index
- Exercise-induced asthma is common β should not prevent physical activity with proper management
Causes & Risk Factors
- Genetic predisposition β asthma runs in families
- Airborne allergens β dust mites, pollen, mould, pet dander
- Fine dust and air pollution β a recurring seasonal issue in Korea
- Respiratory infections β especially in childhood
- Exercise, especially in cold or dry air
- Occupational exposures β chemicals, fumes, dust
- Smoking and second-hand smoke
- Stress and strong emotions
When to See a Doctor
- Call 119 if breathing is very difficult, lips are turning blue, or reliever inhaler is not working
- First diagnosis if you have recurrent cough, wheeze, or breathlessness
- If using your reliever inhaler more than twice per week
- If asthma is waking you from sleep
- Annual asthma review with a GP or respiratory specialist
- After any asthma attack requiring emergency treatment
For emergencies in Korea, call 119
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This content is published for educational purposes only. For accurate diagnosis and personalised treatment, consult a licensed KMA physician in Korea.
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Medical Disclaimer
This article is published by DoctorsInKorea.com for educational and informational purposes only. It does not replace a professional clinical evaluation by a licensed healthcare provider. For accurate medical diagnosis and personalised treatment paths, please book an appointment with a licensed KMA physician. For immediate life-threatening medical emergencies in Korea, please call 119.
Sources & References
- World Health Organization
- NHS UK
- Korea Ministry of Health and Welfare
- Korea Disease Control and Prevention Agency
- Mayo Clinic
Last reviewed: May 29, 2026