I'm in the same boat of don't touch me at all please, or even stand too close. I physically recoil, try to make myself as small as I can, and like freeze waiting for something to happen until they back off. Even with my girlfriend.

I don't know if anyone can know for sure what these preferences are linked too. There could be a scientific reason as to why your neck is more sensitive than someone else's - something with nerves or blood flow or something - or it could be psychological.

For me, I think it relates to my current mental state. I've "learned" that I cannot successfully fight back and so the 'fight' option gets taken away automatically and I'm left with running away or freezing.