How I resolved focal dystonia symptoms on the computer keyboard
Typing was almost impossible to do at first.
My whole hand tensed up no matter which finger I was using to press the keys down. Even when it started out with little tension, it got increasingly tense as I typed 2 or more keys.
The secret to breaking the build up of tension was to gain independence of each finger by waiting patiently for the dystonic reaction to calm down in between each movement.
Here's what I did on the computer keyboard to retrain. I later started to apply the same idea to piano keyboard.