2 ½ years ago I was diagnosed with bilateral carpal tunnel syndrome. Too many years at the keyboard with bad posture, most likely. Did the full nerve conductivity test to make sure it really was, and wasn't sourced elsewhere like spine or shoulder as others have mentioned. Apparently the nerves in my wrist were so pinched only 20 to 30% of the signal was getting through, and very delayed at that. Can't remember the time delay, but it was significant, like 2 or 3 times the normal propagation time.
Tried physical therapy. Helped very little.
Ended up going for the release surgery. Both hands. They do one hand, let you recover for a few weeks, then the other hand.
Relief was _immediate_. I mean, I noticed in the recovery room as I came round - that immediate. It was bliss.
Faithfully did PT to recuperate and it was very helpful - regained all my grip strength. And riding became a joy again.
My advice: go find a very good doctor and get your hands tested. If it is CTS, seriously consider the surgery if your doctor says you're a good candidate.