Pneumonia is a serious illness that should be diagnosed and treated early. Although it is fairly common, it can be a life threatening illness.
These are just some of the symptoms of pneumonia. A person with pneumonia will probably not have all of these symptoms because some are more related to specific types of pneumonia. However, if you have one or more of these symptoms, and are concerned that you may have pneumonia, you should see your doctor as soon as possible. A chest x-ray is usually necessary to diagnose pneumonia -- and early treatment is important.
Productive or Moist Cough
Painful or Frequent Cough
Feeling Tired or Weak (Fatigue)
Chest Pain
Fever
Chills or Shaking and Chattering Teeth
Headache
Nausea and Vomiting
Blue or Grayish Coloring Around the Mouth and Lips
Confusion or Altered Mental State
This is uncommon but possible with bacterial pneumonia.Sources:
Pneumonia. American Lung Association Apr 06. 25 Jul 07.



