Sounds so familiar…have you noticed what triggers it to start? Mine is triggered by a change in temperature, even a slight change…I also have severe itch after showering, which is called Aquagenic Pruritus…but the itch is different. About 7 years ago, someone on a Facebook group for AP, discovered that when she took her workout supplements she didn’t itch…she isolated it to Beta Alanine…which is a otc amino acid supplement. I take 750 mg when the itch starts and it kills the itch…lasts for four hours…I take 1500 mg 30 mins before showering. For some strange reason, showering is far less itchy in the evening…
I believe it is some form of neuropathy. I had a full dermatology work up with no success.
I buy the NOW brand of beta alanine from Amazon in 750 capsules. The suggested dose for preworkout is much higher, 2000 mg and can cause a weird tingling on the skin. It is now recognized as a official treatment for Aquagenic Pruritus. I’ve never figured out a name for the change in temperature itch, but beta alanine works for it too…