Chronic Obstructive Pulmonary Disease (COPD) Download PDF, 2.04MB, PDF Chronic Obstructive Pulmonary Diseases (COPD) is a group of airway (passageways for air to go in and out of the lungs) diseases that: Blocks air from going in and out of the lungs Causes breathing-related problems (e.g. breathlessness, cough, excessive mucus production) Read on to find out about: The causes of COPD The signs and symptoms of COPD How COPD is diagnosed How to manage COPD [Please download the PDF file if you are unable to view the image below.]