Dear Littlered:
I remember having this particular sensation a few years ago, repeatedly. Not looking at your description at the moment, I will try to remember it and describe it as I felt it: it was a cold, cold feeling inside my chest, like an iceberg. very cold. and then, like an electric current, it ran from that cold center in the chest to my arms. As it did, it was still cold in my chest, and the electric current feeling of it moving to my arms kept going and going.
This was an anxiety experience to me. At the time it was a new experience (I don’t remember feeling this before and I no longer do). It may be in your case as well. Just because you felt anxiety in the past a particular way, does not mean that… anxiety is out of new ideas for ways to express itself.
anita