I Started Taking Flexaril 10mg Four Times Aday Becaue I

I started taking flexaril 10mg four times aday becaue I had a C3-T2 neck fusion and valium is not taking care of the spasms on its own. but I have a severe rash on my face and where the fusion I. I know I should stop taking it but its the only thing to work in months. so how can I get rid of the rash? and yes ill stop the med and talk to my Dr. but in the mean time is there anything I can put o it or benedryl anything???