--I thought that your symptoms might have been related to compression in the lower lumbosacral spine area, but given the spread/experience of symptoms in the upper body, it sounds as if there is something more systemic going on.

There are neuropathies that can come on quickly--acutely (in hours/days) or sub-acutely (days/weeks); these often have a toxic, autoimmune, or nutritional etiolgy.

Sound like you need a much more extensive work-up than you can get with the GP--I'd recoomend a neurologist who specializes in neuropathy (few do) or a tertiary center that is also a major research facility into neuropathy (i.e., Cornell-Weill/Columbia, Massachusetts General, Johns Hopkins in Baltimore, Jack Miller in Chicago--depends on where you are, and of course your insurance coverage).

I'd also take a look at some of our tools for suggesting tests for neuro disorders as outlined in our Useful Websites area, particularly the Liza Jaen spreadsheets:

www.lizajane.org

The Poncelet protocols:

http://www.aafp.org/afp/980215ap/poncelet.html

And this article on serological tests for neuropathy causes:

http://www.questdiagnostics.com/hcp/...eralNeurop.htm