Hmm difficult question
In my experience I had headaches from overload or when Dr attacked problems that I was numb for.
I was ultra pain resistant, I felt pain but it was no biggie. DR regeneratet me to the point where I have now a normal Pain response (I don’t like pain at all, it’s fucking shit)
In the process of it I had 1 hour where I believed my brain is going to explode and my skull is cracking open.
After that experience I felt things I was numb before
Was this somehow helpfull?