question: About 2 1/2  weeks ago a very itchy rash started on both forearms has spread up from wrists to above my elbows. there are some small raised spots like blisters. I have now got some of the rash on the top of my knees. I did see a Dr at a walk in clinic, he felt it was a contact rash as I have been visiting someone in the hospital and had to wear isolation gowns.But this can't be the cause as now it is on my legs.