Health Encyclopedia

Drug-induced pulmonary disease

Definition

Drug-induced pulmonary disease is lung disease caused by a bad reaction to a medication.

Causes, incidence, and risk factors

Many types of lung injury can result from medications, and it is often impossible to predict who will develop lung disease resulting from a medication or drug.

The types of lung diseases that may result from medications include:

Allergic reactions -- asthma, hypersensitivity pneumonitis, or eosinophilic pneumonia
Alveolar hemorrhage (bleeding into the lung air sacks)
Bronchitis
Drug-induced lupus erythematosus
Granulomatous lung disease -- a type of tumor in the lungs
Inflammation of the lung air sacks (pneumonitis or infiltration)
Interstitial fibrosis
Lung failure
Lung vasculitis (inflammation of lung blood vessels)
Mediastinitis
Pulmonary edema
Pleural effusion
Swollen lymph nodes

Numerous drugs are known to cause lung disease in some people, including those used during chemotherapy and to treat certain heart conditions. Other drugs known to cause lung disease in some people include certain antibiotics and illicit drugs.

Symptoms

Note: Symptoms may vary from person to person.

Signs and tests

The doctor 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:

Bronchoscopy
Complete blood count with blood differential
Chest CT scan
Chest x-ray
Lung biopsy (in rare cases)
Thoracentesis (if pleural effusion is present)

Treatment

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

Expectations (prognosis)

Acute episodes usually go away within 48 - 72 hours after the medication has been discontinued, but chronic syndromes may take longer to resolve. Some drug-induced lung diseases such as pulmonary fibrosis may never go away.

Complications

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

Calling your health care provider

Call your health care provider if symptoms of this disorder occur.

Prevention

Previous reaction to medication should be noted, so that you can avoid the medication. Wear a medical allergy bracelet if you have known drug reactions. Avoid the abuse of illicit drugs, as this will prevent many drug-induced lung diseases.

References

Murray J, Nadel J. Textbook of Respiratory Medicine. 3rd ed. Philadelphia, Pa: WB Saunders; 2000.

Noble J. Textbook of Primary Care Medicine. 3rd ed. St. Louis, Mo: Mosby; 2001.

Review Date:8/3/2007
Reviewed By:Allen J. Blaivas, DO, Pulmonary, Critical Care, and Sleep Medicine, Department of Veteran Affairs, VA New Jersey Health Care System, East Orange, NJ. Review provided by VeriMed Healthcare Network.

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