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Signs, Symptoms, and Causes

Signs & Symptoms

The signs and symptoms of pneumonia can vary from mild to severe and can include:

  • fatigue 
  • cough  
  • fever 
  • coughing up phlegm (mucus) 
  • shortness of breath 
  • chest pain 
  • an overall feeling of unwellness


There isn't one sole cause when it comes to pneumonia! There are more than 30 different causes of pneumonia, and the most common types of pneumonia are generally grouped by the cause. The main types of pneumonia include: