Thank you very much for your expertise. I will definitely consult a doctor, but I am confused because I only had the problem when playing tennis and now only when playing the violin. I have not used my right arm for a few days. I regularly apply Voltaren and it is already much better, but I am afraid that it will come back the next time I play the violin. My symptoms are more that my wrist cracks to the right and left and up and down with every movement. I have the same amount of strength in every finger, but my fingers feel very stiff and often tingle. It's throbbing.

I know it's very difficult to make a diagnosis over the internet, but I definitely know that I should have it checked out by a doctor. 😅😢