I have a past history of severe carpal tunnel syndrome. The doctor told me that it was so severe, that there were not options other than surgery. He did give me a splint to sleep in that held my hand back, stretching the ligaments in my wrist, and it did help, some. I went to an alternative medicine practitioner and he did a deep tissure massage (which was painful) and he also taught me some stretches. It pretty much cured it. Now, whenever I feel a twinge of it, I do the stretches I was taught. I have not had to wear the splint in years.
Now I also have a pinched nerve in my neck from degenerating disks that sends sharp pain down to my hand. But that is a separate issure from this thread. Sorry.
Now that I'm learning to knit, I notice that I can go for HOURS, literally, and no pain in my arms. Whereas, when I crochet, my left arm will cramp up and I sometimes feel pain all the way to my neck.
My suggestion to you is to maybe try getting a deep tissue massage. They are worth the money if you can afford one. And to learn the correct stretches for your wrist. I can explain them to you, if you want. If you do choose to get a deep tissue massage, make sure you go to a reputable practitioner. It is such a deep massage, I imagine someone could do some damage if they do not know what they are doing. It really helped me. It spared me from surgery.