Hey curley, i too had that problem a while back, id say maybe like 5 months ago. It was the same thing my right had was very painful, i just wasnt able to close it on my own it would hurt sooooooo bad. I still dont know what caused it but i have a idea. I started taking phenteramine (a weightloss drug, and that wbout when my pain began not only my hand, but my R.A. aloso got worse.
I stoped taking those pills and my pain started going away. its not completly gone but at least i can write now, i wasent able to hold a pencil with out pain. Also in a trip to mexico my mom brought my some little garlics at least thats what i think they are. They look like a lillte tiny ball id say a little smaller than a dime, any ways they in a hard shell but they smell like garlic. So ive been drinking one of these lil garlic daily and bot do they help i wish i could show you one. Their awsome. Maybe if you give me your e-mail add. i'll send you a pix so you can try then as well.
Good luck curley.