I developed arthritis on the back of my fret hand wrist. Not only does arthritis run in my family, but just like @JustinArmstrong I made things worse by having poor lifting form in the gym. I had my wrists cocked back during bench press and squats and put WAY too much strain on the wrist joint. I’ve seen learned how to keep it straight, and even use wrists wraps for added support.
Although, after reading what @Hanky_Pooh said, I question if I actually bursitis instead. Either way, inflammation really is the key here.
My pain has subsided greatly. I make sure to get most of my fats from omega-3s, because that fat combats inflammation. Most of us westerners get too much omega-6 in comparison to omega-3s. We DO need omega-6 in our diet, but having a ratio of about 2:1 for omega-6 to omega-3 is considered ideal from what I’ve read from medical professionals.
I’m pretty sure I’ve seen some people say a 1:1 ration is also good. I use cronometer.com to see how much of each I’m getting with a given diet plan. Right now I’m eating hemp seeds(aka: shelled hemp hearts) and ground flax seed which both have lots of omega-3s. Eggs enriched with omega-3 is another thing I’m trying to do more of. I plan on learning how to cook wild caught salmon so I’ll actually enjoy it since that stuff is also high in omega-3s and not omega-6s.
Changing my wrist angle like @Hanky_Pooh talks about also greatly reduced stress on my wrist. I’ve always played with the wrist having a lot of ulnar deviation. I believe that turned out to be a big cause of the strain due to those tendons being pulled and stretched a LOT.
This made me realize you can’t always have your fret hand elbow tucked into your side. Sometimes you can’t do that or else the wrist strain is too much. It might feel awkward, but it’s just something new to get used to.
The muscles that help with that part of your wrist may need some strengthening. What I’ve learned is that tendons/ligaments take on the work of weak muscles and will lead to injury. So, I started doing more forearm exercises. I saw something that works the back of your forearms by placing resistance bands on your fingers and then you open your hand. Definitely a movement we can’t really work on with traditional weights. Only thing I can think of to strengthen the top of the forearms is finger-tip pushups and reverse curls.
Last thing that helped me get my wrist pain under control (besides no gym for two weeks) was to try managing stress better. Shit has been crazy stressful for me lately, and I believe it is a result of my wrist arthritis acting up again a bit more. Deep breathing meditation helps me. Destress teas with Kava are nice too.