I Went To Urgent Care For What I Thought Wa

I went to urgent care for what I thought wa poison ivy- it was only on my forearms. Was given steroid- but didnt go away. Went 5 days without the steroid which the rash came back worse. Went to urgent care again. She put me back on a steroid. It itches only where the rash is- not throughout my body. She said it was a bounce back effect from the original reaction. In total I have seen 4 docs- one said maybe scabies but Disnt fit all criteria. Not worse at night. Not in my crevices. And no one else in the house has any symptoms . First reaction was 8/17 the day after weeding and 2 days after weed wacking . Both my mother and daughter needed steroids and a while to clear up after poison ivy. As did I when I was a child. Am I just being paranoid because the first round on steroid didnt work? And because 1 doc said maybe scabies? The rash is the only places that itch. Up my forearms on my neck down the legs but not behind knees- and could pass for either pics for poision ivy and scabies.. But here are large red almost yeast looking rashes .... Am I being paranoid about scabies ?? I know I am highly allergic to poision ivy/sumac/oak . And first symptoms occurred 1 & 2 days after possible exposure ...