I'm getting hives too.
First started when I was on Evorel Conti patches, thought I was allergic to the adhesive so nurse at GP's switched me to Lenzetto and micronised progesterone, still got rashes, stopped using, rashes went away. Went back Lenzetto and progresterone tablet this year and initially okay, but gradually rashes have come back. Nurse said I'm probably 'estrogen sensitive'?
I would stop taking HRT but I have osteoporosis and take it mainly for that.
I also am hypothryoid (which developed around perimenopause).
I think mine's linked to autoimmune disease as I also have ulcerative colitis.
Hormones are very tricky and we're all different and what works for one won't work for another.
Isn't high estrogen levels dangerous? I don't know what to do. I'm scared my GP will take me off HRT. I already have fractures. Sorry for wittering on.