I had/have arthritis affecting just my left wrist. When it started it was pretty bad, and I thought it might be carpal tunnel syndrome or something like it. I tried wearing various kinds of braces/supports which sort-of helped sometimes and was annoying most of the time. When I finally had a specialist check it out, he spent about 4 seconds looking at the x-ray and prescribed pain meds. (Which were very nice, but maybe a little too nice, and with limited refills.)
I tried a friend's dit da jow (Chinese herbal liniment) that I'd bought mostly because she needed the money, and whether coincidence or not, it eased up. It's only occasionally bothered me since then, and not nearly so strongly.