I'm on metformin and have been getting a serious rash for nearly a year now. The doctors didn't know what it was. Eventually got to see a consultant in october but his presciption didn't do anything. the rash was all over, even on my head and extremely itchy all the time. Saw the consultant again who prescribed Dermovate which eased it in a couple of weeks of use. It's come back again but not as bad. I was told that it will keep returning and to use dermovate to help. Is there an alternative to metformin that won't make me itch?