I just started getting these flat red rashes on my forehead. The only thing different I been doing is taking small amounts of fentanyl in the past week. I've took fent before but never got s rash. You think these itchy rashes could be from the opiates? Was a opiate addict for 10 years so opiates are nothing new for me to take and I never got rashes before. Though I rarely took fentanyl.