I'm curious, is there any involvement with hands and arms? I guess it is just lower torso, if you think it is from a lumbar vertebra. My Lumbar vertibra mainly L1 is kind of munched on my x-ray, so I was thinking it might have something to do with my PN, but I also have hand and arm pain, and sometimes upper back and neck. Maybe if there was a compression of the spinal cord in the neck, it would create these symptoms of whole body SFN...
You have to keep in mind, like the journal says, they are surmising that there is a connection to diabetes, etc. my neurologist was trying to cram me into this catagory, even though I didn't have diabetes 30 years ago... Maybe it makes rm feel better to lump everyone into one group? Either that, they just label it ideopathic and move on...