This is the sign of an allergy. If it is a true food allergy you would have some GI symptoms as well. It can also be an allergic reactin to drugs and some supplements.
I have the same reaction to oral surgery of the tongue. The small bump I had removed was so much easier to put up with than the oversensitivity of my tongue and lips. Sorry it is of no help but I believe it does have to do with some types of dental work as well.