Your story is very very similar to mine. I have been dealing with the same kind of pain in both my hands, wrists and forearms for the last 4 years, triggered by computer use (very click intensive gaming + programming). No doctors, physiotherapists or neurologist have been able to diagnose anything.

I would love to get in touch / get an update

Best regards Esben

Welcome, esben!

I've had some hand problems, mostly due to arthritis, and have often found that rest as well as paying attention to what position my hands are typically in and making a few changes can be helpful.

These routines take time and more time. You just have to wait it out sometimes but eventually you find you've got rid of the pain or stiffness.I wore a splint on one finger for about 10 months on the advice of my doctor because of what is known as a "trigger finger." It was a nuisance, and I had to wear it at night as well as in the daytime, but the finger is now just as good as that finger on the other hand. Neither one of them is capable of as much range of motion as it should be but I already had arthritic changes in my hands. Once your fingers start getting bent out of shape, there's not much that can be done but if you're young enough and lucky, that won't happen to you for a while

Surgery can be an option if the deformity is severe.

Hello
I suggest exploring our thoracic outlet syndrome forum sticky threads and posts, there is more info that can help for both TOS and RSIs.
They can be related due to overuse, head / shoulders forward postures and chronic RSI issues.

https://www.neurotalk.org/thoracic-outlet-syndrome/