For the last few weeks, every now and again I've had tingly or sore cheeks. It's like I've been holding a smile for too long. They're also quite red at times. My BP goes up when I'm at the doctors (white coat syndrome) but is fine at home. I'd liken it to the feeling that you get when you go for a long fast-paced walk on a cold day. I don't feel unwell, but I'm anxious to know if anyone else has this and whether it's something that I should be worried about...