I have what’s similar to a writer’s cramp for typing. My left pinky wants to significantly curl down while typing, very annoying as I was a very fast typer. Doctor has me on muscle relaxant, going from one to the next to see which one works best. (Bracing it helps control, but does not cure and there are times it wants to curl so extreme, the finger splint does very little to help). Tried variety of exercising and some of the muscle relaxants worked temporarily (which is why the dr kept me on a muscle relaxant) then within a couple of days the episode begins once typing again, which as being a sys eng, is a big part of my life.
Possible solution would be butoxin to the specific muscle but there are risks, aren’t there? Expensive? During time off from work, even stayed away from the computer. This started happening now about 1 yr ago (about a few months of quitting smoking, which shouldn’t have anything to do with it). One of my friends suggested trying to get a prescription for THC, but would rather not go down that path if possible.