I've unfortunately read quite a lot about performance injuries because they ended my playing career.... combined with a bad reaction to an antibiotic that damaged my wrist tendons...
In most cases, Focal Dystonia is permanent/semi-permanent. It's where the insulation between two neurological pathways has worn through and the signals overlap in the brain. Basically you've got some of your wires crossed. The only way to fix it is to literally rewire your brain. It's possible, and there are several noteworthy cases.... the Principal Oboist of Chicago for example just recovered from it and won his old job back. As to how, I don't know. It's possible, but uncommon.
If I were you... and I've been in your situation before... Hope for the best, work towards recovery, but prepare for the worst. The damage to my hands was permanent, and my playing career was over as it had barely started. So I turned their weak and fragile nature into an asset instead of a negative aspect. I'm now a flute tech and a piccolo maker. The weakness in my hands makes my touch very light. I can feel leaks down to about .0001" to .0003" (yes other techs. Not a typo. 1-3 ten-thousandths).
Good luck! It's heartbreaking, but you're in good company.