not necessarily a cure but definitely a palliative approach which may help some with the discomfort. Even if it is only when you are in bed, find and wear wool fingerless gloves. Mine are knitted from the first wool I ever spun but if you have a friend who knits otherwise you can try Etsy or somewhere like that. Min come well below my wrist knuckles and cover my fingers to the first joint on each finger. I wear these religiously when I am in bed and a lot during the day depending on what I am doing. They are a tremendous help in keeping my hands warm and supple.