I have developed a leg rash over the past few days, it started out as this:



and then progressed to this after a couple more days:



I have no idea what brought it on or what it is, I saw a Dr. today (had to go to emergency since I don't have a family Dr.) but he ddin't know either, just gave me a prescription for 50mg/day prednisone for several days. Has anyone seen something similar or have any insight into what it might be? thanks.