Thanks for the reply Pete....
It's definately not shingle. Wish it was, then at least I'd know. Ha ha.... Its not a rash I get. Its just a slight mottling effect when I have a back massage.
The pain is so severe when I wake (every mornig, and during the night) that I'm only getting a few hours of broken sleep each night.
Surely someone,somewhere has had or has the same problem as me.... Or am I just unique ha ha.