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Atypical pneumonia

Atypical pneumonia
Classification & external resources
DiseasesDB 1132
MedlinePlus 000079

Atypical pneumonia is a term used to describe a form of pneumonia not caused by one of the more traditional pathogens.



It can caused by one or a combination of the following organisms:

Legionella pneumophila
Causes a severe form of pneumonia with a relatively high mortality rate, known as legionellosis or Legionnaires' disease..
Mycoplasma pneumoniae
Usually occurs in younger age groups and may be associated with neurological and systemic (e.g. rashes) symptoms.
Chlamydophila pneumoniae
Mild form of pneumonia with relatively mild symptoms.

The severe acute respiratory syndrome (SARS) was also considered a kind of atypical pneumonia, and is still called so in the Chinese mainland.


Symptoms include pyrexia, shortness of breath, laboured breathing, cough and potentially cough fractures, arthralgia (joint pain), malaise, loss of appetite, confusion, rash, and diarrhea.


Treatment is with oral antibiotics, mainly with those which interfere with protein synthesis e.g. erythromycin, and diagnosis is confirmed by blood cultures and sputum samples.


Prognosis is usually good and is influenced by age and immunosuppression.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Atypical_pneumonia". A list of authors is available in Wikipedia.
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