Tingling In Face Area

I get this weird sensation on and off-it's mild feeling. But it feels like around my mouth(below my lips)-my lower cheeks-and upper neck get tingly-numblike. I can feel the skin but it just feels less than it usually does. I know this might sound confusion but i'm trying my best to explain it. I have been on zoloft for 3 years for panic/anxiety/depression and I also have klonopin that I take as needed. That ranges anywhere from 3 times a week to once every two weeks. I read somewhere that benzo's can do this. I've recently had a mri fro other symptoms so i'm pretty confident it's not ms or anything of that nature. Any help or advice would be greatly appreciated!
Thank you and god bless,
leah