sithadmin parent
That just sounds like ASMR, which some folks can induce without external stimuli.
I think you are thinking of Frission https://en.wikipedia.org/wiki/Frisson
No, the prior post's reference to having some degree of control over the sensation, plus a prolonged impact on mental state makes it distinctly ASMR, as opposed to frission which is usually a short-lasting involuntary response. [1]