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by Rosalyn Carson-DeWitt, MD
Pneumonia is a lung infection. It can occur in people of all ages.
Atypical pneumonia may present as a mild form of infection compared to other types of pneumonia. Many people with atypical pneumonia can continue normal activities while sick. It is also commonly known as walking pneumonia.
All types of pneumonia are potentially serious conditions. It will require care from your doctor.
Atypical pneumonia may be caused by bacteria, viruses, or fungi. They tend to be different than the bacteria that cause more traditional forms of pneumonia.
Risk Factors TOP
Factors that may increase your chance of atypical pneumonia include:
Symptoms of atypical pneumonia may include any of the following:
Your doctor will ask about your symptoms and medical history. A physical exam will be done. To look for an infection or specific causes of the infection your doctor may ask for:
Your doctor may also need to take pictures of your lungs. This is done with a chest x-ray.
Pneumonia can cause problems with breathing. This may make it difficult for you to get enough oxygen. To measure the level of oxygen in your blood your doctor may do the following tests:
Talk with your doctor about the best treatment plan for you. Treatment options include the following:
Atypical pneumonia can be treated with oral antibiotics. These medications are most often taken at home. However, more severe pneumonia may require antibiotics be delivered by IV in the hospital.
If you are severely ill from pneumonia, you may need extra oxygen. Some people need to be intubated if their lungs are not working well enough. This is the placement of a tube in your throat. It can provide pressure to help keep your lungs open while delivering oxygen.
To help reduce your chance of atypical and other types of pneumonia:
American Lung Association
National Institute for Allergies and Infectious Disease
Blasi F, Tarsia P, Aliberti S, Cosentini R, Allegra L. Chlamydia pneumoniae and mycoplasma pneumoniae. Semin Respir Crit Care Med. 2005;26(6):617-624.
Community-acquired pneumonia in adults. EBSCO DynaMed Plus website. Available at: http://www.dynamed.... Updated August 15, 2016. Accessed September 29, 2016.
Cunha BA. The atypical pneumonias: clinical diagnosis and importance. Clin Microbiol Infect. 2006;12(Suppl)3:12-24.
Cunha BA. Atypical pneumonias: current clinical concepts focusing on Legionnaires' disease. Curr Opin Pulm Med. 2008;14(3):183-194.
Learn about pneumonia. American Lung Association website. Available at:
...(Click grey area to select URL)
Accessed February 9, 2016.
Types of pneumonia. National Heart, Lung, and Blood Institute website. Available at:
...(Click grey area to select URL)
Updated March 1, 2011. Accessed February 9, 2016.
Thibodeau KP, Viera A.J. Atypical pathogens and challenges in community-acqiured pneumonia. Am Fam Physician. 2004;69(7):1699-1706.
Last reviewed March 2017 by EBSCO Medical Review Board David L. Horn, MD
Last Updated: 2/9/2016
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