“…Dapsone (DDS, diamino‐diphenylsulfone) is used in the treatment of leprosy and chloroquine‐resistant malaria, as well as for the management of pneumocystitis carinii in patients with acquired immunodeficiency syndrome (AIDS). In addition, it is useful in the treatment of inflammatory dermatoses such as dermatitis herpetiformis, bullous pemphigoid, and ulcers caused by brown recluse spider bites 1 , 2 , 3 , 4 , 5 , 6 , 7 . However, adverse drug reactions, particularly methemoglobinemia, hemolysis, and neurologic effects (such as headache and nervousness) limit its usefulness 8 , 9 , 10 , 11 , 12 .…”