General Symptoms. The symptoms of some bacterial pneumonias, such as pneumococcal pneumonia, develop very quickly and typically include:
Emergency Symptoms. Symptoms of pneumonia indicating a medical emergency include the following:
Symptoms in the Elderly. It is important to note that older people may have fewer or different symptoms than younger people. Symptoms may come on much more slowly. An elderly person who experiences even a minor cough and weakness for more than a day should seek medical help. Some elderly people may be confused, lethargic, and show general deterioration.
General Symptoms of Atypical Pneumonias. Atypical pneumonia is most commonly caused by mycoplasma, Legionnaires' disease, or chlamydia and usually appears in children and young adults.
The disease progresses gradually:
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