All A to Z Topics


Pneumonia (bronchopneumonia, lobar pneumonia and double pneumonia) is inflammation (swelling) of the tissue in one or both of your lungs.
Symptoms of pneumonia
The symptoms of pneumonia can develop suddenly (for example, over 24-48 hours) or may come on more slowly, over several days.
Causes of pneumonia
Pneumonia is most commonly caused by an infection, usually a bacterial infection. However, many different bacteria, viruses and fungi can cause pneumonia.
Diagnosing pneumonia
Your GP can often diagnose pneumonia by asking you about your symptoms and examining your chest. In some cases, you may need further tests.
Treating pneumonia
Mild pneumonia can usually be successfully treated at home with antibiotics. More severe cases of pneumonia may need treatment in hospital.
Complications of pneumonia
The three main complications of pneumonia are pleurisy, a lung abscess and blood poisoning (septicaemia).
Preventing pneumonia
The best ways to prevent pneumonia are to live a healthy lifestyle and practise good hygiene. Vaccination is recommended for those at high risk.
See what the doctor sees with Map of Medicine
See what your doctor sees, find out what is happening with your Pneumonia treatment and what the next steps might be.