I didn't read all the answers but what I did read didn't mention braces on the hands at night. I have arthritis in both my hands and the base of my thumb. I just got a cortisone shot in the base of my thumb (both hands). One hand is wonderful. The other one is just a dull ache all the time with weakness in the hand. I read where someone said they took potasium. You shouldn't do that. I was told it could damage the heart. You should eat banannas, tomatoes, canaloupe, baked potatoe, apples.....
Check the computer for a list of foods. I try to eat a bananna a day. That should help with the cramping.