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Lupus, discoid  - view of lesions on the chest
Lupus, discoid - view of lesions on the chest


Lupus, discoid on a child's face
Lupus, discoid on a child's face


Lupus, discoid on the face
Lupus, discoid on the face


Antibodies
Antibodies


Definition:

Drug-induced lupus erythematosus is an autoimmune disorder that is brought on by a reaction to medication.

See also: Systemic lupus erythematosus (SLE)



Causes, incidence, and risk factors:

Drug-induced lupus erythematosus is similar to systemic lupus erythematosus (SLE). It is caused by a hypersensitivity reaction to a medication. The drug may react with cell materials, causing the body to form antibodies that attack the body's own healthy cells.

Several medications are known to cause drug-induced lupus. They include:

  • Chlorpromazine
  • Hydralazine
  • Isoniazid
  • Methyldopa
  • Penicillamine
  • Procainamide
  • Quinidine
  • Sulfasalazine

Symptoms tend to occur after taking the drug for at least 3 to 6 months.

Persons with drug-induced lupus erythematosus may have symptoms that affect the joints (arthritis ), heart, and lungs. Other symptoms associated with SLE, such as lupus nephritis and nervous system (neurological) disease, are rare.

Drug-induced lupus affects men and women equally.



Symptoms:

Signs and tests:

The health care provider will listen to your chest with a stethoscope. The doctor may hear a sound called a heart friction rub or pleural friction rub. There may be signs of pericarditis .

A skin exam shows a rash.

Tests that may be done include:

A chest x-ray may show signs of pleuritis or pericarditis. An ECG may show that the heart is affected.



Treatment:

Usually, symptoms go away within several days to weeks after stopping the medication that caused the condition.

Treatment may include:

  • Nonsteroidal anti-inflammatory drugs (NSAIDs) to treat arthritis and pleurisy
  • Corticosteroid creams to treat skin rashes
  • Antimalarial drugs (hydroxychloroquine) to treat skin and arthritis symptoms

Very rarely, high doses of corticosteroids (prednisone, methylprednisolone) and immune system suppressants (azathioprine or cyclophosphamide) are used to treat persons with severe drug-induced lupus that affects the heart, kidney, and neurological system.

Protective clothing, sunglasses, and sunscreen are recommended.



Support Groups:



Expectations (prognosis):

Drug-induced lupus erythematosus is usually not as severe as SLE. Usually, the symptoms go away within a few days to weeks after stopping the medication.

You should avoid the medication in the future, or symptoms usually return. Routine eye exams are recommended to detect eye complications early.



Complications:

Calling your health care provider:

Call for an appointment with your health care provider if:

  • Your symptoms do not improve after you stop taking the medication that caused the condition
  • You develop new symptoms


Prevention:

Be aware of the risk when taking medications that are known to cause this reaction. If symptoms begin to appear, contact your doctor.



References:

Tassiulas IO, Boumpas DT. Clinical features and treatment of systemic lupus erythematosus. In: Firestein GS, Budd RC, Harris Jr. ED, McInnes IB, Russy S, Sergent JS, eds. Kelley's Textbook of Rheumatology. 8th ed. St. Louis, Mo: WB Saunders; 2008: chap 75.




Review Date: 5/31/2009
Reviewed By: Mark James Borigini, Associate Clinical Professor of Medicine, University of California, Irvine, Irvine, CA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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. Call 911 for all medical emergencies. 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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