I have a fuzzy twitchy upper lip...

[woodlandfaerie]

..diagnose me please

It is a touch red, but not sore to touch, a little bit swollen in the middle of the 'bud' of the upper lip, and it is throbbing/fuzzy/twitching. It was intermittent but now it is most of the time.

I have tried to think of what food I might have eaten to irritate it, but can't think what it could be.

Cold sore.

nope, not a cold sore. I have those from time to time, in the same place. This feels deeper, like the muscle is twitching/throbbing, not the skin. the redness is from a slight swelling rather than the red of a cold sore.

Could be an ulcer in your mouth causing swelling?

Nope, not an ulcer, there is nothing painful on either side of the mouth, not bashed it

DH said maybe like a nervous tick in the eye, but instead on the lip? , as you can actually see it twitching.