So i have a rash that continues to spread. It started on my scalp, but now covers the top half of my body. The dermatologist says that its a reaction to a medication.... I have contacted a couple of doctors who are tweaking my meds, although none of them think that its the medicine they prescribed (go figure!).

Has anyone had a rash from Mestinon, Robinal, or Prednisone, or even plasmaphersis?

Any thoughts?