I have a follow up question.

So the issues I've had in my right arm have been with me for a long time. (The shoulder, but also De Quervain's and lateral epicondilitis, basically that whole forearm. Started with the DQ). The pain in my forearm and shoulder flares up and sometimes settles down. But I had sort of gotten used to it. Or lived, moved, and worked out around it. (Had PT on and off.)

I've been wearing wrist and elbow braces on that side for a couple of days now, and it's helping with the pain from those chronic injuries quite a lot (to the point that I'm doing this cuckoo rock idea and posting about it).

However. Now I'm feeling pain in the opposite arm. I did have a mild (mild, like tiny) bit of tendonitis on the left elbow, but now it's like that whole forearm pain from the right arm just swapped sides! Has anyone heard of this?

I know that there's a neural component to pain, for sure. Could that be part of it? Some kind of brain switch? Because I've read about neural strength gains happening with contralateral training (injured side gets some strength if you work the uninjured side). Can that happen with chronic pain as well? I.e. if pain is reduced on one side, maybe you're so used to it that your brain just moves it somewhere else?

I'll ask my PT (and sports med) when I see them - maybe I'm just working that side more and the tendonitis has had a chance to flourish :/ - but is this a possibility? (Because the pain is deep in the forearm, like my right-arm pain was after several months, not immediately. It literally feels like the pain just swapped sides.)