I Have A Rash That Started About 2 Months Ago.

I have a rash that started about 2 months ago. started on my wrist and now has moved up my forarms, the backs of my hands and tops of my feet. I saw a doctor as was prescribed a steroid cream and benadryl for an allergic reaction. the rash got worse. i went back and did a Scabies treatment, which was ruled out also.