My left arm started to hurt after stupidly repeating the act of tensing up.
Got a capsule of advil pills to reduce the pain/speed up the healing process. I also stopped playing during that time.
iirc, I am pretty sure I was out for like two weeks
As for fingers, there would just a lot of strain at times. Pretty sure I messed up my right index, but it isn't in pain. My tapping is just weird.
There would be moments where I would curl my fingers and hurt though, all four that I used. Didn't see to much of an issue, but that might of been bad for the long run if I continued to do the same process.