I Take Primidone , Glimiprirde, PAxil And A Anti Heartburn

I take Primidone , Glimiprirde, PAxil and a anti heartburn pill. I started getting a small rash on the side of my mouth about the same time as I started the Glimipiride and Primidone. It is now all the way across my chin and going up both cheeks and start
ing between my eyes. I have never had anything like this and some days it itches quite bad and other days it doesn't . Could it be a side of effect of any of these meds?