Related: Christian Muenzner is an extreme metal guitarist who was diagnosed with focal dystonia in his left hand. He was part of Obscura, one of my favorite metal bands ever.
https://en.wikipedia.org/wiki/Christian_Munzner#Focal_Dyston...
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https://www.youtube.com/watch?v=gAPpXcvGpps
Listen to this from about 4:00 onwards, and tell me if you'd ordinarily be able to guess that the sounds you hear at 4:20 or so came out of a guitar. I wouldn't, at least not at once.
After the diagnosis, he was faced with a, uh, unreliable left hand. There was nothing to do but take his right-hand "tapping" abilities to insane levels. :)