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An unexpected side-effect of a commonly used drug
Francisco Fernández González1, Samayra Miranda, Mónica Santiago Casiano
1Internal Medicine Department San Juan City Hospital, San Juan Puerto Rico. frank1298@hotmail.com
Boletin De La Asociacion Medica De Puerto Rico
|November 29, 2013
Summary
A 68-year-old woman developed drug-induced lupus erythematosus from amiodarone treatment. Removing the medication led to complete symptom remission, highlighting the importance of early diagnosis for this rare side effect.
Area of Science:
- Cardiology
- Dermatology
- Rheumatology
Background:
- Amiodarone is an antiarrhythmic drug commonly used for cardiac rhythm disorders.
- Drug-induced lupus erythematosus (DILE) is a rare autoimmune condition triggered by certain medications.
Observation:
- A 68-year-old female patient presented with a generalized skin rash, arthralgia, and difficulty walking after five years of amiodarone therapy.
- Laboratory tests showed a positive antinuclear antibody (ANA) test.
- A skin biopsy revealed a superficial and deep perivascular infiltrate.
Findings:
- The patient's clinical presentation and laboratory results were consistent with drug-induced lupus erythematosus.
- Discontinuation of amiodarone resulted in complete resolution of all symptoms and signs.
Implications:
- This case underscores the importance of considering DILE in patients on long-term amiodarone treatment presenting with lupus-like symptoms.
- Prompt diagnosis and withdrawal of the offending agent are crucial for effective management and prevention of complications.
- Physicians should maintain a high index of suspicion for amiodarone-induced DILE.
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