The muscles by my shoulder blades have sharp pains and it runs down the back of arm and into hands and fingers. If I use my hands to pick something up, lift my arms, or even when I lie down and sleep,it feels as tho the circulation is cut off to my arm and hands. In the morning my hands are swollen and I cannot open my hand all the way and I can t use them bc i can t grip anything. I use meth.is it dehydration or nerve dage?