I seize up as well at the gynaes. I hate having to have a smear, but it is so important for your health to get checked.
The scratching burning pain, I get this too sometimes. Do you have any scar tissue there? I do and I find this is what causes the pain. Sometimes it is not triggered psychologically though, I wake up sometimes feeling it. I thought perhaps it could be endometriosis, but it doesn't bleed and my periods are fairly light because I am on birth control pills.
I am wondering if maybe sometimes nerves can get damaged and sometimes they get all tingly as they are not working properly due to damage which causes pain even when there is nothing there.??