Suggest Treatment For Itchy Rashes On Thigh

I have a rash on my thighs ( not inner), I thought it was because of shaving, it was very itching and looked like a heat rash almost. I now have the the similar tiny pimples/dots that are extremely itchy coming up on my hands. I thought I might be allergic to something I ate but I've had only chicken everyday since last Thursday. What could this be?