Increase of methemoglobin level is named as methemoglobinemia characterized by functional anemia and tissue hypoxia. Methemoglobinemia can be congenital, but acquired form are more often caused by various drugs and toxins. Methylene blue is the most effective antidote for acquired methemoglobinemia. When methylene blue is not available, alternative treatments such as ascorbic acid and hyperbaric oxygen can be useful. In this paper we presented a case of methomoglobinemia due to dapsone overdose.
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Toker et al. (2015) studied this question.
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