Unknown pain disease?

Looking for help with my condition. After seeing multiple Dr’s the past three years and the last being a neurologist. It’s a mystery as to what is going on. These are the symptoms.
-ice cold feet
-extreme pain in hand and feet.
-stiff fingers

The main auto immune disorders have been ruled out along with peripheral neuropathy also.

I’m just lost trying to figure this out. Currently on Lyrica for the pain. Helps but it just covers up some of the pain.