Onset of illness[change source]
Symptoms for pneumonia, typically include, cough, fatigue, chills, and shortness of breath. Each of the symptoms, occurs with different frequencies.
In the elderly, confusion, may be the most prominent sign, and fever, is less likely to be present.
Children Early Symptoms[change source]
In children, under the age of five, fever, cough, and fast or difficult breathing, are the most common symptoms.
Children Severe Pneumonia[change source]
More severe signs, and symptoms, in children may include, blue-tinged skin, unwillingness to drink, convulsions, ongoing vomiting, extremes of temperature, or a decreased level of consciousness.
Pneumonia, fills the lung's alveoli with fluid, limiting how much oxygen, can be absorbed. The alveolus, on the left, is normal, whereas, the one on the right, is full of fluid from pneumonia.
Bacterial Pneumonia[change source]
Risk factors[change source]
Diagnosis - Other Methods[change source]
Where, and how a pneumonia was acquired, can have a profound impact on survival. Examples are, community-acquired, or hospital-acquired pneumonia. 
Other Methods[change source]
Other methods of prevention, include smoking cessation, and treating underlying illnesses, (such as diabetes and HIV), properly.
Severe pneumonia[change source]
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