Here's a really great leaflet produced by our colleaues at the NHS community services organisation, NCH&C. It will help people with COPD (Chronic Obstructive Pulmonary Disease) pdf COPD Leaflet (1.07 MB)
Chronic obstructive pulmonary disease is the name for a collection of lung diseases including chronic bronchitis, emphysema and chronic obstructive airways disease. People with COPD have difficulties breathing, primarily due to the narrowing of their airways, this is called airflow obstruction. Typical symptoms of COPD include increasing breathlessness when active, a persistent cough with phlegm, frequent chest infections.
There's also more information here: http://www.nhs.uk/Conditions/Chronic-obstructive-pulmonary-disease/Pages/Introduction.aspx