Look up Reflex Sympathetic Dystrophy, and see if that has info that matches. Otherwise, Raynauds is similar.
There's a website call RSD.org. They may have info that helps.
Does autoimmune disease run in the family?
You could look at Raynaud's syndrome. My daughter has this. When you press her legs, it takes quite a while for the colour to bounce back.
...Julia