6 weeks ago I broke out in a pimple like rash on the tops of my thighs and the next day it was all over my body except my face. I went to Dr. he thought it was an allergy to something. Was on prednisone and Claritin and neither one has helped much. I m off the prednisone now. The top of my legs cleared up, but my arms and lower legs are not clearing up much. They seem to keep flaring up. I went back to Dr. and now he thinks it may be my nerves. I think it may be viral? Everyone so often, one spot will just pop up out of no where. Any suggestions, I m at my wits end!