Understanding COPD
Symptoms, causes, and treatment options.
點解呢個 事情
Chronic Obstructive Pulmonary Disease (COPD) is a progressive lung condition that makes breathing difficult. It’s often underdiagnosed because early symptoms are mild and easily dismissed. Understanding COPD can help you recognise symptoms early and seek treatment before significant lung damage occurs.
What Are the Symptoms?
COPD symptoms usually develop slowly and worsen over time:
Chronic cough
A persistent cough that lasts for months or years, often called a “smoker’s cough.” This is usually one of the earliest symptoms.
Phlegm production
Regular production of mucus or sputum from the chest, especially in the morning.
Breathlessness
Feeling short of breath during activities that used to be easy, such as walking up stairs or carrying groceries. This tends to worsen over time.
Wheezing
A whistling or squeaking sound when breathing, especially during exhalation.
Frequent chest infections
Being more susceptible to colds, bronchitis, and pneumonia that take longer to recover from.
What Are the Causes?
The most common cause of COPD is long-term exposure to lung irritants. The single biggest risk factor is smoking, but other factors can also contribute:
食緊煙
The #1 cause of COPD. Both current and former smokers are at risk. The more you smoke and the longer you smoke, the higher your risk.
Up to 75% of COPD cases are in smokers or ex-smokers
Air pollution and occupational exposure
Long-term exposure to air pollution, secondhand smoke, dust, fumes, and chemicals (e.g., in certain workplaces) can damage the lungs and lead to COPD.
World Health Organization
Genetic factors
A rare genetic condition called alpha-1 antitrypsin deficiency can cause COPD, even in people who have never smoked. Family history also increases risk.
NHLBI
Age and previous lung infections
COPD is more common in people over 40. Severe childhood respiratory infections and asthma may also increase risk.
American Lung Association
How Is COPD Treated?
COPD cannot be cured, but treatment can slow progression, relieve symptoms, and improve quality of life:
Smoking cessation
The single most important step. Quitting smoking at any stage of COPD can slow disease progression and improve symptoms.
Medications
Bronchodilators (inhalers) help open airways, while steroids reduce inflammation. Your doctor will prescribe the right combination for you.
Pulmonary rehabilitation
A structured programme combining exercise training, breathing techniques, and education to improve lung function and quality of life.
Oxygen therapy
For severe COPD, supplemental oxygen may be needed to maintain adequate oxygen levels in the blood.
Watch: 理解慢性阻塞性肺病
Trusted videos explaining COPD and the importance of quitting tobacco:
American Lung Association — COPD & Quitting Tobacco Use
Good for explaining COPD and why quitting tobacco is important.
American Lung Association — How Smoking Impacts Your Lung Health
Visual explanation of how smoking affects the lungs and why quitting matters.
Community Resources (Hong Kong)
Local support for COPD and respiratory health:
Hospital Authority pulmonary rehabilitation programmes
Structured exercise and education programmes for patients with COPD and other chronic lung conditions.
Hong Kong Tuberculosis, Chest and Heart Diseases Association
Provides respiratory health education, pulmonary rehabilitation, and community support for patients with lung disease.
District Health Centres & DHC Expresses
Offer health risk assessments and can connect you with respiratory care services in your district.
- American Lung Association. COPD Causes and Risk Factors.
- World Health Organization. Chronic Obstructive Pulmonary Disease (COPD).
- National Heart, Lung, and Blood Institute (NHLBI). COPD.
- Global Initiative for Chronic Obstructive Lung Disease (GOLD). 2024 Report.
This page provides general health information based on published guidelines and research and is not a substitute for personalised medical advice. COPD should be diagnosed and managed by a qualified healthcare professional.
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Your care team can help you understand what this means for you specifically, and can point you to the right local resources.
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