I also used to believe this...but now am starting to realize that the candida byproducts that get transferred in the blood are really what are causing the horrible nervous system issues....it attacks your enzyme function and neurotransmitter function. The toxins hit your nervous system and make you feel like you got it in your brain, spinal column etc.
Most of the neurotransmitters in our body are located in our intestines....and if candida colonies are localized in that area....then surely it will feel like the stuff is stuck in our spine. It's more that the toxic byproducts are flowing through our bloodstream...and are INDIRECTLY affecting our spine and brain. Just google the images of the large intestine...and you will see that it overrides your spinal column and goes across your abdomen down your lower left side and into the colon...easy to get confused where the candida is actually localized. I dunno just an opinion.
You will all be surprised what happens when the stuff is removed from the intestines....all the other nervous system feelings go away instantly....