Pneumonia is inflammation of the air spaces in the lungs, most commonly due to an infection. Pneumonia may be caused by viruses, bacteria, or fungi; less frequently by other causes.

Common symptoms of Pneumonia are:

  • fever
  • chills
  • cough
  • shortness of breath and
  • fatigue

If pneumonia is caused by bacteria, your doctor will give you antibiotics. These almost always cure pneumonia caused by bacteria. Pneumonia can make you feel very sick. But after you take antibiotics, you should start to feel much better. Call your doctor if you do not start to feel better after 2 to 3 days of antibiotics. Call your doctor right away if you feel worse.