Quick answer. Asthma is a common, long-term airway condition affecting roughly 1 in 20 adults and about 1 in 5 children in Singapore. It is managed with two main inhaler types: a controller (preventer) inhaler containing an inhaled corticosteroid to reduce airway inflammation, and a reliever inhaler to ease symptoms quickly. Common local triggers include house dust mites, haze, cigarette smoke, pollen and respiratory infections. Most people achieve good control with the right inhaler technique, a written asthma action plan, and trigger avoidance. Asthma is covered under the Chronic Disease Management Programme (CDMP), so MediSave can be used for outpatient treatment, and subsidies such as CHAS and Healthier SG Chronic Tier help lower costs. This guide is general information and not a substitute for advice from your own doctor.
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Asthma is one of the most common long-term respiratory conditions in Singapore, affecting about 1 in 20 adults and roughly 1 in 5 children. It causes the airways to become inflamed and narrowed, leading to wheezing, breathlessness, chest tightness and cough. While asthma cannot be cured, the large majority of people can lead full, active lives when it is well controlled. This guide explains common triggers in the Singapore setting, how controller and reliever inhalers differ, what an asthma action plan is, when to seek urgent care, and how the Chronic Disease Management Programme (CDMP), MediSave and subsidies help with costs. It is general information only and not medical advice.
At a glance
| Feature | Controller (preventer) | Reliever (rescue) |
|---|---|---|
| Main drug class | Inhaled corticosteroid (often with a long-acting bronchodilator) | Short-acting bronchodilator (e.g. salbutamol) |
| What it does | Reduces airway inflammation over time | Opens narrowed airways quickly during symptoms |
| When used | Usually daily, as prescribed | When symptoms occur or before exercise, as advised |
| Onset | Works gradually over days to weeks | Works within minutes |
| Key point | Skipping it raises attack risk | Needing it often signals poor control |
What is asthma and what triggers it in Singapore?
Asthma is a chronic condition in which the airways are inflamed and over-sensitive, narrowing in response to certain triggers. Common triggers in the Singapore environment include house dust mites (the two main local species are Dermatophagoides and Blomia tropicalis), the periodic haze and air pollution, cigarette and second-hand smoke, pollen, animal dander, indoor mould, strong smells, and changes in weather or humidity. Respiratory infections such as colds and flu, as well as exercise, can also set off symptoms. Identifying and reducing exposure to your personal triggers is a core part of long-term control. During haze periods, checking the PSI and limiting strenuous outdoor activity can help.
Controller versus reliever inhalers
Asthma medication generally falls into two groups. A controller (preventer) inhaler contains an inhaled corticosteroid, often combined with a long-acting bronchodilator, and is taken regularly to keep airway inflammation down. A reliever (rescue) inhaler contains a fast-acting bronchodilator that opens the airways within minutes during symptoms. Drug classes are described in general terms here; your doctor will choose the specific inhaler and dose. International guidance (GINA) has shifted in recent years toward using an inhaled-corticosteroid-containing reliever rather than a bronchodilator-only reliever, because this lowers the risk of severe attacks. If you find you are reaching for your reliever frequently, this is a sign your asthma is not well controlled and you should review your treatment with your doctor.
Your asthma action plan
An asthma action plan is a written, personalised plan you develop with your doctor. HealthHub recommends it cover your regular medication schedule, the warning signs that your asthma is worsening, exactly which medication to take if symptoms flare, and when to seek medical help. Many clinics present this as a simple traffic-light layout: a green zone (well controlled, continue usual medication), a yellow zone (symptoms worsening, follow your step-up instructions), and a red zone (severe symptoms needing urgent help). Keeping the plan accessible and reviewing it at follow-up visits helps you respond early and confidently when symptoms change.
Costs, CDMP, MediSave and subsidies
Asthma is one of the chronic conditions covered under the Ministry of Health’s Chronic Disease Management Programme (CDMP). This means MediSave can be used to help pay for outpatient treatment, currently up to S$500 per patient per year for standard chronic conditions (with a higher cap for complex cases). Since 1 February 2024, the previous 15% cash co-payment is waived for CDMP treatment at your enrolled Healthier SG clinic. Singapore Citizens may also receive subsidies through the Community Health Assist Scheme (CHAS) and the Healthier SG Chronic Tier at participating GPs. As a guide only, a basic spirometry (lung function) test in the private sector commonly ranges from about S$50 to S$120, with fuller lung function testing costing more; public and polyclinic settings are typically cheaper. Always confirm current fees with the clinic.
When to seek urgent medical help
Seek immediate medical attention if you or someone with asthma is unable to speak in full sentences, is struggling or gasping to breathe, has chest pain or palpitations, develops blue lips or fingertips, or does not improve after using the reliever inhaler. These are signs of a severe asthma attack and may require emergency treatment. For ongoing symptoms that are not well controlled, frequent reliever use, or night-time waking due to asthma, arrange a non-urgent review with your GP or a respiratory physician to reassess your treatment and inhaler technique.
When to see a respiratory specialist
Many people manage asthma well with their GP or polyclinic under CDMP. Consider a referral to a respiratory physician if your asthma remains poorly controlled despite regular controller treatment, if you have had a severe or hospitalising attack, if the diagnosis is uncertain, or if you need formal lung function testing and a tailored management plan. A specialist can confirm the diagnosis with spirometry, review possible triggers and other contributing conditions, and optimise your inhaler regimen and action plan.
Related guides
- Best Respiratory & Lung Clinics in Singapore — our editorial shortlist
- COPD care
- Sleep apnoea
- Chronic cough
Sources
- HealthHub (HPB/MOH) – Asthma
- MOH – Chronic Disease Management Programme (CDMP)
- MOH – MediSave for Outpatient Care
- Healthier SG – Chronic Tier
- SingHealth – Asthma
Related conditions & guides
Related conditions and guides you may find useful:
- Breathlessness in Singapore
- Bronchitis in Singapore
- Lung Cancer in Singapore
- Lung Nodules in Singapore
- Pneumonia in Singapore
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