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[A severe skin reaction following mexiletene]
B Habot1, C Rabinovitz, A Friedensohn
1Shmuel Harofeh Geriatric Medical Center.
Harefuah
|December 1, 1992
Summary
Mexiletine, used for ventricular premature beats, can cause severe skin rash. This rare adverse effect resolved after stopping the medication, highlighting the importance of monitoring drug reactions.
Area of Science:
- Cardiology
- Dermatology
- Clinical Pharmacology
Background:
- Ischemic heart disease is a common condition often managed with antiarrhythmic drugs.
- Mexiletine is an oral antiarrhythmic medication used to treat ventricular arrhythmias.
- Ventricular premature beats can be a symptom of underlying ischemic heart disease.
Observation:
- A 70-year-old male patient was prescribed oral mexiletine for ventricular premature beats.
- The patient developed a severe maculopapular rash during mexiletine treatment.
- The rash was unresponsive to standard antiallergic therapies.
Findings:
- Discontinuation of mexiletine led to the complete resolution of the severe rash.
- While central nervous, cardiovascular, and gastrointestinal adverse effects of mexiletine are known, severe rash is a rare presentation.
- This case highlights an unusual and severe cutaneous adverse drug reaction to mexiletine.
Implications:
- Clinicians should be aware of the potential for severe cutaneous adverse reactions to mexiletine, even if rare.
- Prompt recognition and drug discontinuation are crucial for managing severe drug-induced rashes.
- Further investigation into the mechanisms of mexiletine-induced dermatologic toxicity may be warranted.