Keyboards used to kill me about 8-9 years ago, after going to the ergo split keyboard that got a lot better. Then a couple of years back it started again with my mouse arm, forearm and sometimes back of my hand.
Those vertical mouse things kept me going for a while but eventually I swapped to become a left handed mouse user. That seems to have me under control again.
Coincidently, my ergo keyboard at work died yesterday (the del key died so I can't log on

) so I went a day on a normal keyboard and it took about 2-3 hours for the old pains to come back.
I asked a doctor in Japan about it, what a waste of time that was. He said "can you still move your fingers?"

"urm, yeah!" :roll: "Well you're okay then!"

The old fart must be used to looking at war wounds or something.
All I can say, is don't give up, try new devices, new positions, armrests, desk heights, check your feet are on the floor okay etc etc or whatever and give things a decent go, it can take a week for the pain to die down when you try something new that works. Just be careful of the wonder devices that claim to fix everything for $$$, they are a scam.
RSI is evil

feel fortunate if you haven't experienced it.