Related Experiment Videos
Uncharacteristic cutaneous reactions induced by quinidine
Drug Intelligence & Clinical Pharmacy
|July 1, 1982
Summary
Two patients experienced rare skin reactions to quinidine, including a widespread rash and localized itching. Symptoms resolved after discontinuing quinidine and switching to disopyramide phosphate.
Area of Science:
- Dermatology
- Clinical Pharmacology
Background:
- Quinidine is an antiarrhythmic medication with known potential for adverse drug reactions.
- Cutaneous manifestations of drug hypersensitivity can vary widely in presentation.
Purpose of the Study:
- To describe two distinct cases of unusual cutaneous reactions possibly induced by quinidine.
- To highlight the successful management of these reactions by drug dechallenge and substitution.
Main Methods:
- Case report of two patients presenting with dermatologic symptoms.
- Clinical observation of symptom resolution after quinidine withdrawal (dechallenge).
- Assessment of tolerance to an alternative medication, disopyramide phosphate.
Main Results:
- Patient 1 exhibited a diffuse, nonpruritic macular rash.
- Patient 2 presented with localized pruritus without visible skin changes.
- Both patients' symptoms resolved completely after discontinuing quinidine.
- Substitution with disopyramide phosphate was well-tolerated in both cases.
Conclusions:
- Quinidine can cause diverse and uncommon cutaneous reactions.
- Drug dechallenge and substitution with a related compound like disopyramide phosphate is an effective management strategy.