I think it's not unusual, in that it tends to be comorbid with high IQ.... but sensory sensitivity also tends to be comorbid with other non-NT ways of being, too. Folks on the autism spectrum also quite often have sensory sensitivities that place them well outside the range of NT people...

though there are "highly sensitive" people of more normative IQ, too.


My DH has no sensory OE's or hypersensitivities, but DD and I both do. She is PG, and DH and I are both probably in HG/EG range. So it's just coincidence, IMO. My ex-MIL had auditory hypersensitivity, though not as extreme as my own-- and honestly I doubt that she was even MG.

Schrödinger's cat walks into a bar. And doesn't.