Chronic obstructive pulmonary disease (COPD) is the name for a collection of lung diseases including chronic bronchitis, emphysema and chronic airways disease. The main symptom of COPD is an inability to breathe in and out properly. This is also referred to as airflow obstruction.

NHS

Guide to the symptoms, diagnosis, treatment and risks of COPD from the NHS.

British Lung Foundation

Information and guidance on living with COPD

These links all come from trusted resources but if you are unsure about these or any other medical matters please contact your doctor or pharmacist for advice.