Even before injury, chronic back pain may start in the brain

It's infuriating to chronic pain sufferers to be told their pain in "all in the head." But a new study offers strong evidence that even before a person experiences an injury, the likelihood that the resulting pain will become chronic can be predicted by examining the brain's "white matter" -- the bundles of fatty fibers that carry electrical impulses between the brain's hemispheres and among its dense network of cells and structures.

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