I had some really severe hand problems a few years ago, pre-riding days. No one could diagnose it. I went to an acupucturist and she cured it. She insisted that I keep my hands warm at all times - wearing gloves to do my barn chores and other outside stuff even when it was only a little chilly, making sure I waited til water was warm before I wash my hands.

Also, we tend to curl our hands and wrists up in all kinds of contortions when we sleep, restricting blood flow and healing. I wore braces that kept my hands and wrists in a straight but relaxed position.

I hope these ideas can help your hands heal up faster, too.