I had elbow pain, but now I am using this: https://efitelite.com/product/elbow-support-compression/
I get pain across my hands back part of the palm and knuckles akin to RSI, its something I’ve had since I was a kid (being a kid computer geek). I’ve kind of got use to the pain but on long tournament weekends I’m always looking for cool things to put my hands on. I’ve also found that the more tired I am the worse the pain gets so before a big tournament I always try to get a good nights sleep which makes a huge difference for me.