Obviously there's nerve involvement somewhere in your spine, and the nerves carry signals all over. Why it would carry a signal to your shoulder blade that it's irritated there is beyond me.

But obviously there IS some irritation there, and I'm sure it's driving you insane! I've had that too, and it is very very bothersome. But I have an answer for mine. I had the leads of an SCS in the area of mine, and the nerve roots are irritated there, so that's why I feel it. It's been about 12 years since they removed the SCS but I still have the irritation.

I'm sure you must be going NUTS with yours.
What does the doctor say to do about it? Anything?
I wish you the very best. I wish I could give you some advice, but this is something I just don't know this much about. God bless & take care. Hugs, Lee