I often wake up with unbearable pain and numbness in my hands. What's causing this?
This could be due to some neuropathy or it could be the way that are sleeping. I know if I sleep with my hands over my head, I can have numbness and pins and needles in my arms, but it clears when I get up and start moving around. I know it can be a terrible way to wake up though, so you should probably let your doctor know that you're experiencing these symptoms.
In the meantime, here's some information on neuropathy:
Painful Diabetic Neuropathy
Triglycerides and Neuropathy