Hi,
Found your post as I am experiencing the exact same thing. It's a strange cold, almost 'minty' kinda sensation (without having been anywhere near mints of course)
I've never felt anything like this before- glad to know I'm not the only one, but sadly have no answers for you yet

Hi,
i have the same feeling today after my lunch, cold/chill feeling at the back of my mouth, before it for last 3-4 days i have been experincing a bit of tightness in my throat which is moving from right side to left , and from the middle of my neck to its bottom. do you found any answer

I have had his same feeling for nearly a week now. At first I thought it was a result of something I have been eating or drinking, so I changed my habits for a few days. Yet, it persists. I've been looking for anything to give me an idea of how to make it stop, but nothing yet. I've found that it is worse at night and when I'm in cold or airy situations. (i.e. near a fan) This seems like such a strange thing to make a doctor's appointment for. "Excuse me doctor, my tongue and throat feel cold." I can never pinpoint it. Sometimes the sensation is near the back of my throat, sometimes i feel like its the center of my tongue, or the tip, of the sides. It's just so strange.