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Go see someone who specializes in hand pain and hand surgery. In the Seattle area, Dr. William Ericson in Montlake Terrace WA has been great and helped me quite a bit. I somewhat suspect that some of my own hand issues are related to greater use of small devices like phones and tablets that I can use when lying down in bed. I have a hard time differentiating what hand pain is due to my prior life as a software engineer vs. the car accident which led to the FM vs. my change in behaviors due to the accident and FM.
Right now I'm wearing compression gloves that I got on Amazon. I think they help, as compression shirts help with my torso pain.
I initially got large compression gloves but I wasn't happy with the level of compression so I found these which were a size down. Your hands are probably smaller than mine so just search around for something with good ratings and is prime eligable.