Chronic Obstructive Airways Disease (COPD) is a term used to define a cluster of conditions that cause severe breathing difficulties. COPD is characterised by restricted airflow, coughing and a persistent shortness of breath.
The most common causes of COPD are tobacco use and air pollution. According to the World Health Organisation (WHO), COPD is the third leading cause of death in the world.
There is currently no cure for COPD. However, with proper treatment, some of the symptoms of the disease can improve.