Pneumonia is a breathing (respiratory) condition in which there is an infection of the lung.
Community-acquired pneumonia is pneumonia in people who have not recently been in the hospital or another health care facility (nursing home, rehabilitation facility).
Pneumonia is an inflammatory condition of the lung—especially affecting the microscopic air sacs (alveoli)—associated with fever, chest symptoms, and a lack of air space (consolidation) on a chest X-ray. Pneumonia is typically caused by an infection but there are a number of other causes. Infectious agents include: bacteria, viruses, fungi, and parasites.
A chest X-ray showing a very prominent wedge-shaped bacterial pneumonia in the right
Typical symptoms include cough, chest pain, fever, and difficulty breathing Diagnostic tools include x-rays and examination of the sputum. Vaccines to prevent certain types of pneumonia are available. Treatment depends on the underlying cause. Presumed bacterial pneumonia is treated with antibiotics.
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