Pneumonia is inflammation of the lungs, usually caused by an infection.
Symptoms of pneumonia include a cough, difficulty breathing, a high temperature and chest pain.
Pneumonia is usually caused by a bacterial infection. It can also be caused by other infections or things like food or vomit getting in your lungs.
Pneumonia is usually treated with antibiotics from a GP. Severe pneumonia may need to be treated in hospital.
The pneumococcal and flu vaccines can help prevent pneumonia. These vaccines are offered on the NHS for some people at high risk.