In reply to CragRat11:
I have hypermobile type EDS. It's interesting because I've found climbing has contributed to improving my proprioception and joint stability, but I do sometimes get finger pain on the same side where I've had a previous shoulder subluxation. All the way down the chain from that shoulder, through to that elbow, wrist and fingers, I have very slightly less functional strength and stability, but it's not the thing that's limiting my grade, and as I say, climbing has generally helped over the course of 12 months.
I find those finger symptoms are often triggered by very crimpy routes, so if I feel the early warning signs of that pain I switch to an open handed grip for the rest of the session and have a break for a couple of days. I also use things like therapy putty when I'm at my desk working. Slowly, things have improved.
I also do different things from most people to warm up. I avoid static stretching and focus on activation exercises for problem areas and just getting the joints moving about before going for it.