My TOS was caused by repetitive type work.
I would get sharp cramps in the backs of my hands for quite awhile. Later the pain & tightness moved to my wrists and elbows eventually joining up with my neck and shoulder pains.

Being off work, with good PT, very good chiro & self care reduced the chronic tension/tightness that was a large part of my pain and symptoms.
Tightness from the upper body can often cause sx down the line..