Get tested with EMG by your orthropedist for...to rule out carpal tunnel or other issues that are treatable.
You can take some pain medicine or some cream or the pain
They even have a setting with "no heat". I sometimes throw epson salt in there too.
I also have Raynaud's phenomenon. It seems nothing can really warm my hands even under warm water for a length of time. I have hand warmers for the winter.
How do you remedy your symptoms? What do you use or do?