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    Idiopathic pulmonary fibrosis

    Idiopathic diffuse interstitial pulmonary fibrosis; IPF; Pulmonary fibrosis; Cryptogenic fibrosing alveolitis; CFA; Fibrosing alveolitis; Usual interstitial pneumonitis; UIP

    Idiopathic pulmonary fibrosis is scarring or thickening of the lungs without a known cause.


    Doctors do not know what causes idiopathic pulmonary fibrosis (IPF) or why some people get it. Idiopathic means the cause is not known. The condition may be due to the lungs responding to an unknown substance or injury. Genes may play a role in developing IPF. The disease occurs most often in people between 50 and 70 years old.

    When you have IPF, your lungs become scarred and stiffened. This makes it hard for you to breathe. In some people, IPF gets worse quickly over months ora few years.In others, IPF worsens over a much longer time.


    • Chest pain (occasionally)
    • Cough (usually dry)
    • Decreased tolerance for activity
    • Shortness of breath during activity (this symptom lasts for months or years, and over time may also occur when at rest)

    The health care provider will perform a physical exam and ask about your medical history. You will be askedwhether you have been exposed to asbestos and if you have been a smoker.

    The physical exam may find that you have:

    • Abnormal breath sounds called cackles
    • Blue-colored skin (cyanosis) around the mouth or fingernails due to low oxygen (with advanced disease)
    • Enlargement of the fingernail bases, called clubbing (with advanced disease)

    Patients with idiopathic pulmonary fibrosis have abnormal breath sounds called crackles. Patients with advanced disease may have blue-colored skin (cyanosis) around the mouth or in the fingernails due to low oxygen.

    Examination of the fingers and toes may show abnormal enlargement of the fingernail bases (clubbing).

    Tests that help diagnose idiopathic pulmonary fibrosis include the following:

    • Bronchoscopy
    • Chest CT scan
    • Chest x-ray
    • Measurements of blood oxygen level
    • Pulmonary function tests
    • Six-minute walk test
    • Surgical lung biopsy
    • Tests for connective tissue diseases such as rheumatoid arthritis, lupus, or scleroderma
    • Open lung (surgical) lung biopsy


    There is no known cure exists for IPF.

    Treatment is aimed at relieving symptoms:

    • Medicines such as corticosteroids may help reduce swelling (inflammation) inside the lungs.
    • Patients with low blood oxygen levels may need oxygensupportat home.
    • Lung rehabilitation will not cure the disease. But it can help maintain the ability to exercise without breathing difficulty.

    Making home and lifestyle changes can help to manage breathing symptoms.If you or any family memberssmoke, now is the time to stop rightaway.

    Some patients with advanced pulmonary fibrosis may need a lung transplant.

    Support Groups

    You can ease the stress of illness by joining a support group. Sharing with others who have common experiences and problems can help you not feel alone.

    These organizations are good resources for information on lung disease:

    Outlook (Prognosis)

    Some patients may improve or stay stable for a long time with or without treatment. Most people get worse, even with treatment.

    When breathing symptoms become more severe, you and your doctor should discuss treatments that prolong life, such as lung transplantation. Also discuss advanced care planning.

    • Abnormally high levels of red blood cells due to low blood oxygen levels
    • Collapsed lung
    • High blood pressure in the arteries of the lungs
    • Respiratory failure

    When to Contact a Medical Professional

    Call yourhealth care providerpromptly if you have any of the following::

    • Your breathing is getting harder, faster, or shallow (are unable to take a deep breath)
    • Need to lean forward when sitting to breathe comfortably.
    • Frequent headaches
    • Feel sleepy or confused
    • Fever
    • Coughing up dark mucus
    • Fingertips or the skin around your fingernails is blue


    American Thoracic Society (ATS), European Respiratory Society (ERS), Japanese Respiratory Society (JRS), and Latin American Thoracic Association (ALAT). Idiopathic pulmonary fibrosis: evidence based guideline for diagnosis and management. Am J Respir Crit Care Med. 2011; 183:788-824.

    Raghu G. Interstitial lung disease. In: Goldman L, Schafer AI, eds. Goldman's Cecil Medicine. 24th ed. Philadelphia, Pa.: Elsevier Saunders; 2011:chap 92.

    Selman M, Morrison LD, Noble PW, King TE Jr. Idiopathic interstitial pneumonias. In: Mason RJ, Broaddus VC, Martin TR, et al., eds. Murray and Nadel's Textbook of Respiratory Medicine. 5th ed. Philadelphia, Pa.: Elsevier Saunders; 2010:chap 57.


    • Spirometry


    • Clubbing


    • Respiratory system


      • Spirometry


      • Clubbing


      • Respiratory system


      A Closer Look

        Talking to your MD

          Self Care

            Tests for Idiopathic pulmonary fibrosis

            Review Date: 6/3/2013

            Reviewed By: Denis Hadjiliadis, MD, Assistant Professor of Medicine, Division of Pulmonary, Allergy and Critical Care, University of Pennsylvania, Philadelphia, PA. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, Bethanne Black, Stephanie Slon, and Nissi Wang.

            The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

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