I've cornered in the UFC and Bellator, which is my shorthand for communicating that I've had almost every injury under the sun, and have tried almost every therapy under the sun.
Wrist, elbow and shoulder injuiries are pretty annoying in that it's very difficult to know exactly what really works and what doesn't. What works the most is figuring out what caused it (if it's a repetitive use injury) and not doing that for a while, or coming up with a substitute for it (e.g. change your mousehand to the other hand or change your mouse, or change how you use it), and then: (1) sleep lots, (2) experiment with ice and heat according to prevailing recommendations by PT professionals, to find out what seems to work and not work for you personally, (3) consider that your diet may be playing a role.
10 years ago many, many pro fighters (who live injured, pretty much continuously, and who break their bodies down more than anybody on earth except maybe field and construction workers long term) were eating variations of "alkalizing" diets.
I will say this: the best I ever felt in my life was when I was studiously eating an alkalizing diet. That is a big thing to communicate, what that really is, and how cleanly and cleverly you really have to eat to eat that way and get enough protein (red meat, fish and eggs are very acidifying). But that's worth looking into. Most of the staples are parts of any healthy or raw foods diet.
For me, to eat that way required a greens shake every morning. The good news -- and probably this is significant -- is that starting the day with a greens shake just naturally got me off coffee.
Not eating that way now, but I should be.
Icing has naysayers nowadays, but it helped me greatly.
Random additional thought: research links between stroke and chiropractic before going to chiropractors. I've benefitted from it when I had debilitating neck injuries, but I also have two jiu jitsu friends who have had strokes in their 30s that seemed likely linked to chiropractic.
One of the most annoying things about wrist/elbow/shoulder injuries is that they will puzzle and torture you for months, and then one day you will wake up and suddenly realize, Oh s---, what the hell, when did that injury disappear, I used to have an injury, didn't I?