Dapsone is fairly a common drug in the armamentarium of a dermatologist with varied approved and ever-increasing latitude of novel indications. Methemoglobinemia is a known hematologic adverse effect with protean clinical manifestations depending on percentage of hemoglobin involved. We report one such case of Hansen's disease on multi drug therapy (MDT) and oral steroids who reported with an episode of sudden-onset palpitation.
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