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Asthma

 Boy breathing in a bronchodilator inhaler
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Asthma is a chronic disease characterized by recurrent attacks of breathlessness and wheezing, which vary in severity and frequency from person to person. During an asthma attack, the lining of the bronchial tubes swells, causing the airways to narrow and reducing the flow of air into and out of the lungs.

The causes of asthma are not completely understood. However, risk factors for developing asthma include inhaling asthma “triggers”, such as allergens, tobacco smoke and chemical irritants. Asthma cannot be cured, but appropriate management can control the disorder and enable people to enjoy a good quality of life.

FACT SHEETS

- Asthma

RELATED LINKS

- Asthma
- Chronic respiratory diseases
- Global Alliance against Chronic Respiratory Diseases
- Chronic diseases and health promotion

FEATURES

- 10 facts on asthma
- Q&A: What triggers an asthma attack?


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