You could try a vertical mouse. It reduces stress on your forearms and tendons since your hand is in a more natural position.

You can find some cheap ones online. I would start with that and if it helps I'd look for a more ergonomic one. That is, if you can use a hand mouse at all.

Also, does alcohol help/hurt in any way?

Edit: Something like this https://www.amazon.com/Anker-Ergonomic-Optical-Vertical-Buttons/dp/B00FPAVUHC