I have had this same forearm itching since the 1990's. I used all the creams and freezing ointments that were available. In 2019 I accidentally discovered a relief to my Brachioradial pruritus condition. Since that time I have created a simple exercise, a stretch really, that has completely stopped my itching. I have to do it daily for about 2 minutes and it keeps the itching away ever since. And if I happen to feel any itching coming on I immediately use the stretch to make it go away.
I would love to share my exercise (stretch) but I'm not sure if I'm aloud to. I read the terms and I'm just not sure if sharing would trigger my getting ejected. Can any of the moderators tell me?