I have a Histamine issue...Itch is a big problem for me...triggered by change in temperature and also with water contact...on a FB Group for itch, someone discovered that their pre-workout supplement killed their itch...she isolated it to Beta Alanine and shared it with the group...5 years later, approx. 95% of the members use beta alanine with great success. I'm not sure if it will help your itch problem...but it may be worth a try. It is a OTC supplement, I buy mine on Amazon and use the NOW brand...I think you can also buy at GNC or other health focused shops. It is fairly cheap and may be worth a try. I take 750 mg. the dose on the package is much higher, but 750 mg works for me.

I read so much about people taking seriously heavy medication for itch, including steroids, I am so lucky this works for me.