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    Interstitial Lung Disease (ILD)

    Interstitial lung disease (ILD) is a group of conditions that cause inflammation and scarring around the tiny air sacs (alveoli) in the lungs. The changes make it hard to take in oxygen. People with ILD may feel short of breath and tired. They may also have a dry cough and chest discomfort.

    Examples of ILD include these conditions:

    • Asbestosis

    • Hypersensitivity pneumonitis

    • Idiopathic pulmonary fibrosis

    • Sarcoidosis

    Front view of male head and torso showing respiratory system.
    The diaphragm is a muscle below the lungs. It flattens to draw air in as you inhale, then rises as you exhale.

    Inside your lungs

    When you breathe, air travels in and out of your lungs through the windpipe (trachea), airways (bronchi), and branching airways (bronchioles). Oxygen (O2) and carbon dioxide (CO2) are exchanged in the tiny air sacs (alveoli). Oxygen passes from the alveoli to the blood vessels through the tissue called interstitium. The blood vessels then carry oxygen-rich blood to the rest of your body. Carbon dioxide moves back from the blood vessels to the alveoli. You then breathe it out.

    Bronchiole and alveolar sac with blood supply showing oxygen/carbon dioxide exchange.
    Alveoli are air sacs at the ends of bronchioles.
    Closeup view of bronchiole and alveolus showing thickened interstitial tissue.
    Damaged alveoli supply less oxygen to the body.

    How lungs become damaged

    With ILD, the lungs have inflammation and scarring around the alveoli. The changes make it hard to take in oxygen.

    Closeup view of interstitial tissue in lung showing gas exchange between alveolus and capillary.
    Normal interstitium
    Closeup view of interstitial tissue in lung showing impaired gas exchange between alveolus and capillary because of interstitial lung disease.
    Scarred interstitium

    Causes of ILD

    In most cases, ILD has no known cause. This is called idiopathic pulmonary fibrosis. Some known causes of ILD include:

    • Dust from asbestos or silica, coal dust, gases, fumes, or poisons

    • Some medicines

    • Radiation therapy

    • Certain lung infections

    • Connective tissue disease, such as scleroderma, lupus, or rheumatoid arthritis

    • Smoking. Smoking can cause ILD or make it much worse.

    Treatment and healthcare providers for ILD

    Treatment may include:

    • Medicine

    • Breathing methods

    • Exercise

    • Pulmonary rehab

    • Supplemental oxygen

    • Smoking cessation programs

    • In some cases, you may need a lung transplant

    Your healthcare team may include:

    • Primary care provider. This could be your family healthcare provider or internist.

    • Pulmonologist. This is a healthcare provider who specializes in treating lung problems.

    • Respiratory therapist. This person gives treatment and support for people with lung disease.

    • Social worker. This person helps with your daily needs and family life, accessing community resources, counseling services, and stress management.

    Online Medical Reviewer: Deborah Pedersen MD
    Online Medical Reviewer: Jessica Gotwals BSN MPH
    Online Medical Reviewer: Marianne Fraser MSN RN
    Date Last Reviewed: 3/1/2022
    © 2000-2024 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.
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    Southern New Mexico
    Surgery Center

    2301 Indian Wells Rd. Suite B
    Alamogordo, NM 88310
    www.snmsc.org

    Phone: 575.437.0890
    Fax: 575.437.0905
    Email: info@snmsc.org

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