Linear IgA Disease
"I have been taking dapsone since December 2007 for (rare) Linear IgA disease.  I was increased to 100 mg 1Xday.  Severe anemia set in. Hospitalized and given 2 blood transfusions. Its true that some people have a bad reaction and can develop anemia.  Taken off medicine and skin blisters returned.  Anemia went away!  Am currently on 25 mg 1X day.  Less effective, but helps some.  I think DAPSONE is probably very effective to clear skin-- but can wreck hemoglobin, etc."