I've been recently diagnosed with DH, and started on Dapsone a few weeks ago. I've also been taking synthroid for a few years for hyperthyroidism. I was fine for a while, very glad that my rash was clearing up. But now I feel ill all the time - tired, cold, dizzy - and the rash has returned. My doctors are "waiting to see what happens." Has anyone else experienced anything similar? Any comments would be appreciated.