Carbamazepine is a widely used drug associated with numerous side effects including skin eruptions that appear in about 4% of patients. Epicutaneous tests have been used with variable success in skin drug reactions. The purpose of this study was to work out the efficacy of this type of test in carbamazepine reactions. Five patients with carbamazepine cutaneous reaction were studied. Clinical, laboratory and histopathological data were recorded. The 5 patients and 20 controls were tested with carbamazepine 1% in petrolatum. In 4 patients the carbamazepine epicutaneous test was positive. The 20 healthy controls were negative. Epicutaneous testing is a simple and helpful method in detecting carbamazepine hypersensitivity.

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