--you may have Central Pain Syndrome.

This is a condition caused when some agent--be it stroke, B12 deficiency, viral attack, MS--damages the spinothalamic sensory tracts in the brain, resulting in considerable neural pain. Apparently these tracts are a switching and relay area for many neural impulses, and if they are damaged, the signals are not "shut down" before they build to extreme levels.

People with this condition generally report not only severe burning dysesthesas, but allodynia (improper pain) to tiny, usually non-painful stimuli, and a weird phenomenon known as summation, in which pain starts out at a mild level but builds for several seconds (or more) after the initial stimulus.

For those for whom this caused by stroke, the pain is generally on the side of the stroke, and may cover the entire body half, head to toe.

We don't have a specific forum for this here (although the Chronic Pain forum is a good place to find people who've experienced conditions of this nature), but this is a very good site to explain this in more detail:

www.centralpain.org

Welcome to the forums--and feel free to post anywhere and get input.