I had the VX950 uber rash, I mean it was something to see, and I was initially put on oral prednisone, starting dose
of 40mg (a pretty hefty dose
, but a fairly typical starting dose
of pred for allergic/autoimmune reactions). This worked wonderfully, it calmed the rash right down. Things were going along fine initially, but as I tapered down from 40mg to 30mg (for a few days) and then 25 mg for a few days, and then 20mg for a days, all was well...