lungs

Pneumonia

Pneumonia

Symptoms of pneumonia usually depend on the cause, but common symptoms include cough, chest pain, fever and breathlessness. Young people usually recover quickly, but many people feel tired for several weeks afterwards.

Emphysema

Emphysema

In people with emphysema, the walls of the tiny air sacs in the lungs (alveoli) become gradually damaged, causing breathing difficulties. Smoking is the main cause of this condition.