I posted this same thing on the hair problems board & some people said it was from hats/hair bands, etc.
I went to the deramtologist recently & he said it either
Sensative skin: there was a name for it, but cant remember
He gave me a creme to rub on the area at night before bed to se if it works(havent started it yet)
On the same board someone posted that a symptom of sensative scalp was for tyhroid issues like Graves disease or Himishotos disease(??)
I had my thyroid tested last year, but I think Im gonna have it rechecked again, you never know.
I hope this gives you all some extra Info
I feel your pain...literally