reading about CTS it is obvious that this situation can have many many causes which cannot all be covered by the standard medicin.
My story after having trouble with CTS symptoms and other pains is the following: 2 years ago I had this condition and ignored it in the first time. But as it got stronger I searched for a solution for myself an finally found the trigger point therapy by Clair and Amber Davies. Unfortunately this method is not known by many doctors although this might be different in other areas of the world. I got the workbook for this method and studied it.
The trigger points are small points in a muscle where the muscle has a very high tension. The key is that they cause pains and symptoms in (sometimes totally) different parts of the body. It is quite easy to understand. The tension leads to a contraction at this point and can have an influence at other places where this muscle has connections. Now, in the case of the CTS they say that it is often caused by trigger points in the "Mm. scaleni". These are 3 muscles which are located near the throat.
After looking up the internet for these muscles it became obvious to me that "working with a computer" and "playing guitar" are hot candidates for overstressing the "Mm. scaleni", leading to trigger points and at the end to CTS symptoms.
Finally, indeed I was able to stop the condition completely by treating trigger points in this area. In my case it was a hit in the bull's-eye. However, people are different. These trigger points at the throat are not the only ones leading to CTS. And the method only works when the reason for the pain really are trigger points! But in all it is worth considering!
There is nothing more beautiful than the sound of a guitar - maybe aside from that of two guitars (Frederic Chopin)