I get that tingly / itchy feeling now, just before I begin to feel very warm / hot. It's what my hot flushes have reduced to since being on hrt (Estradot 75mcg, and Prometrium 200mg x 12 days). And I'm only getting a few a day, rather than the almost constant attacks I was getting. I find it infinitely preferable to the distressing adrenal surges / panic I would get before a flush - it was really strange for me, I knew what the surge was about in my logical mind, but my emotional mind would have none of it. And for me, it's progesterone (particularly norethisterone) that makes it worse. I, too, am going to be trialling a Mirena soon, otherwise it's a hysterectomy for me xx
The tingles (that are partnered with mild anxiety) I can live with, but those horrendous surges I cannot.