Dapsone-induced methemoglobinemia: "Saturation gap"-The key to diagnosis

Abstract

Two cases of Acquired Methemoglobinemia are presented. The significance of a high index of suspicion for diagnosisis emphasized, especially in the presence of a "saturation gap". The various causes of acquired methemoglobinemia are enumerated and the management reviewed.

Keywords

• Acquired methemoglobinemia
• dapsone
• saturation gap