It could also be simple prickly heat, where some calamine lotion should help. But do have it evaluated by a doctor.
Marcia
We can play "guess the skin condition" but you haven't given too much to work with:) In any event, you really have to see a dermatologist and get your skin properly evaluated. Yes, treatment can screw up the skin among other things. I had numerous skin problems during and post treatment all caused by interferon. OK, I'll guess :) You might have a form of tx induced rosacea. Or not. Please see a dermatologist for a better diagnosis.