... may be associated with a plethora of adverse effects, some of whichmay involve the pulmonary parenchyma. Methemoglobinemia with resultant cyanosis, bonemarrow aplasia and/or hemolytic anemia, ... maybegin as early as 7–10 days after administration of thedrug or as late as 6 months into therapy with dapsone.Cutaneous lesions can range from erythematous papulesas in our patient, to plaques, ... thedrug, dapsone which is a sulfone. Dapsone (4,4'-Diamin-odiphenylsulphone) is used mainly as an anti-inflamma-tory and anti-bacterial agent for the treatment of skindiseases, bacteria, and...