Drug-induced lupus erythematosus
Drug-induced Lupus Erythematosus[edit | edit source]
Drug-induced lupus erythematosus (DILE) is an autoimmune disease that occurs as a result of long-term use of certain medications. It is similar to systemic lupus erythematosus (SLE) but is generally less severe and resolves after the discontinuation of the offending drug.
Pathophysiology[edit | edit source]
DILE is characterized by the production of autoantibodies against the body's own tissues, leading to inflammation and tissue damage. The exact mechanism by which drugs induce lupus is not fully understood, but it is believed to involve the alteration of immune system function by the drug, leading to an autoimmune response.
Commonly Implicated Drugs[edit | edit source]
Several drugs have been implicated in the development of DILE. These include:
Hydralazine, in particular, is a well-known cause of DILE and is used in the treatment of hypertension.
Clinical Features[edit | edit source]
The symptoms of DILE are similar to those of SLE but are generally milder. Common symptoms include:
- Arthralgia (joint pain)
- Myalgia (muscle pain)
- Fever
- Serositis (inflammation of the serous tissues)
- Rash
Unlike SLE, DILE rarely affects the kidneys or central nervous system.
Diagnosis[edit | edit source]
The diagnosis of DILE is based on the clinical presentation, history of drug exposure, and laboratory findings. Key laboratory findings include the presence of antinuclear antibodies (ANA) and anti-histone antibodies, which are commonly associated with DILE.
Treatment[edit | edit source]
The primary treatment for DILE is the discontinuation of the offending drug. Symptoms typically resolve within weeks to months after stopping the drug. In some cases, nonsteroidal anti-inflammatory drugs (NSAIDs) or corticosteroids may be used to manage symptoms.
Prognosis[edit | edit source]
The prognosis for patients with DILE is generally good, as symptoms usually resolve after the drug is discontinued. However, it is important to monitor patients for any persistent symptoms that may indicate the development of SLE.
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