• Atypical Pneumonia

    (Walking Pneumonia)


    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.
    The Lungs (Cut-away View)
    Nucleus factsheet image
    Copyright © Nucleus Medical Media, Inc.


    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

    Factors that may increase your chance of atypical pneumonia include:
    • Contact with someone who has an infection (mycoplasma and chlamydia)
    • Exposure to water or soil that contains the bacteria (legionella)
    • Living in closed communities, such as dormitories in boarding schools or colleges, nursing homes, and military barracks
    • Cigarette smoking
    • Lung disease
    • Weakened immune system


    Symptoms of atypical pneumonia may include any of the following:
      General signs of infection such as:
      • Mild fever
      • Enlarged lymph nodes
      • Chills
      • Muscle aches and pains
      Signs of respiratory infection such as:
      • Cough that may produce phlegm
      • Chest pain
      • Shortness of breath
      • Fast breathing
    • Sore throat
    • Abdominal pain
    • Decreased appetite
    • Headache
    • Confusion
    • Fatigue
    • Weakness
    • Vomiting
    • Diarrhea
    • Skin rash


    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:
    • Blood tests
    • Urine tests
    • Blood cultures
    • Sputum test
    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:
    • Pulse oximetry
    • Arterial blood gas


    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:
    • Use good hand-washing techniques.
    • Avoid contact with other ill people.
    • Get treatment for your chronic conditions.


    American Lung Association http://www.lung.org

    National Institute for Allergies and Infectious Disease http://www.niaid.nih.gov


    Health Canada http://www.hc-sc.gc.ca

    The Lung Association http://www.lung.ca


    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.com/topics/dmp~AN~T115170/Community-acquired-pneumonia-in-adults. 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: http://www.lung.org/lung-health-and-diseases/lung-disease-lookup/pneumonia/learn-about-pneumonia.html. Accessed February 9, 2016.

    Types of pneumonia. National Heart, Lung, and Blood Institute website. Available at: http://www.nhlbi.nih.gov/health/health-topics/topics/pnu/types. 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.

    Revision Information

    • Reviewer: EBSCO Medical Review Board David L. Horn, MD
    • Review Date: 03/2017
    • Update Date: 02/09/2016
  • LiveWell personal health survey

    How healthy are you really? Find out – free.Learn more

    It's time to stop guessing. If you want to make some changes but just aren't sure how, the free personal health survey from LiveWell is a great place to start.

  • HeartSHAPE Spotlight

    At risk for a heart attack? Learn more

    Fight heart disease and prevent heart attacks. HeartSHAPE® is a painless, non-invasive test that checks pictures of your heart for early-stage coronary disease.

  • Calories and Energy Needs

    Calorie NeedsLearn more

    How many calories do you need to eat each day to maintain your weight and fuel your physical activity? Enter a few of your stats into this calculator to find out.

  • Ideal Body Weight

    Ideal Body WeightLearn more

    Using body mass index as a reference, this calculator determines your ideal body weight range. All you need to do is enter your height.

  • Body Mass Index

    Body Mass IndexLearn more

    This tool considers your height and weight to assess your weight status.

  • Can we help answer your questions?

    Wellmont Nurse Connection is your resource for valuable health information any time, 24 hours a day, seven days a week. Speak to a Nurse any time, day or night, at (423) 723-6877 or toll-free at 1-877-230-NURSE.