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Drug-induced pulmonary disease

 

Drug-induced pulmonary disease is lung disease brought on by a bad reaction to a medicine.

Causes

Many types of lung injury can result from medicines. It is usually impossible to predict who will develop lung disease from a medicine.

Types of lung problems or diseases that may be caused by medicines include:

  • Allergic reactions -- asthma, hypersensitivity pneumonitis, or eosinophilic pneumonia
  • Bleeding into the lung air sacks, called alveoli (alveolar hemorrhage)
  • Bronchitis
  • Damage to lung tissue (interstitial fibrosis)
  • Drugs that cause the immune system to mistakenly attack and destroy healthy body tissue, such as drug-induced lupus erythematosus
  • Granulomatous lung disease -- a type of inflammation in the lungs
  • Inflammation of the lung air sacs (pneumonitis or infiltration)
  • Lung vasculitis (inflammation of lung blood vessels)
  • Lymph node swelling
  • Swelling and irritation (inflammation) of the chest area between the lungs (mediastinitis)
  • Abnormal buildup of fluid in the lungs (pulmonary edema)
  • Buildup of fluid between the layers of tissue that line the lungs and chest cavity (pleural effusion)

Many medicines are known to cause lung disease in some people. These include:

  • Antibiotics, such as nitrofurantoin and sulfa drugs
  • Heart medicines, such as amiodarone
  • Chemotherapy drugs such as bleomycin, cyclophosphamide, and methotrexate
  • Illegal drugs

Symptoms

 

Symptoms may include any of the following:

  • Bloody sputum
  • Chest pain
  • Cough
  • Fever
  • Shortness of breath
  • Wheezing

 

Exams and Tests

 

The health care provider will perform a physical exam and listen to your chest and lungs with a stethoscope. Abnormal breath sounds may be heard.

Tests that may be done include:

  • Arterial blood gases
  • Autoimmune blood tests
  • Blood chemistry
  • Bronchoscopy
  • Complete blood count with blood differential
  • Chest CT scan
  • Chest x-ray
  • Lung biopsy (in rare cases)
  • Lung function tests
  • Thoracentesis (if pleural effusion is present)

 

Treatment

 

The first step is to stop the medicine that is causing the problem. Other treatments depend on your specific symptoms. For example, you may need oxygen until the drug-induced lung disease improves. Anti-inflammatory medicines called steroids are most often used to quickly reverse the lung inflammation.

 

Outlook (Prognosis)

 

Acute episodes usually go away within 48 to 72 hours after the medicine has been stopped. Chronic symptoms may take longer to improve.

Some drug-induced lung diseases, such as pulmonary fibrosis, may never go away.

 

Possible Complications

 

Complications that may develop include:

  • Diffuse interstitial pulmonary fibrosis
  • Hypoxemia (low blood oxygen)
  • Respiratory failure

 

When to Contact a Medical Professional

 

Call your provider if you develop symptoms of this disorder.

 

Prevention

 

Note any past reaction you have had to a medicine, so that you can avoid the medicine in the future. Wear a medical alert bracelet if you have known drug reactions. Stay away from illegal drugs to prevent drug-induced lung diseases.

 

 

References

Dulohery MM, Maldonado F, Limper AH. Drug-induced pulmonary disease. Judson MA, Morgehthau AS, Baughman RP. Sarcoidosis. In: Broaddus VC, Mason RJ, Ernst JD, et al, eds. Murray and Nadel's Textbook of Respiratory Medicine. 6th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 71.

 
  • Respiratory system

    Respiratory system - illustration

    Air is breathed in through the nasal passageways, travels through the trachea and bronchi to the lungs.

    Respiratory system

    illustration

    • Respiratory system

      Respiratory system - illustration

      Air is breathed in through the nasal passageways, travels through the trachea and bronchi to the lungs.

      Respiratory system

      illustration

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        Tests for Drug-induced pulmonary disease

         

           

          Review Date: 6/22/2015

          Reviewed By: Denis Hadjiliadis, MD, MHS, Associate Professor of Medicine, Pulmonary, Allergy, and Critical Care, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.

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