ah right - a nerve problem.
That is much simpler problem that bad back!
Basically all the nerves from your nbrain to yur body run down the centre of your spinal column. Sounds like you have a trapped nerve where a nerve gets squashed between two joints. The nerve can't get through the trapped bit hence the numbness adn pins and needles and so on.
What the physio will do will just manipulate and jiggle the bones a bit to free the nerve. you will have the mother of all pins and needles/cramp for a couple of seconds and then perfect health all being well!!!
