Brain gray matter decrease in chronic pain is the consequence and not the cause of pain.

@article{RodriguezRaecke2009BrainGM,
  title={Brain gray matter decrease in chronic pain is the consequence and not the cause of pain.},
  author={Rea Rodriguez-Raecke and Andreas Niemeier and Kristin Ihle and Wolfgang R{\"u}ther and Arne May},
  journal={The Journal of neuroscience : the official journal of the Society for Neuroscience},
  year={2009},
  volume={29 44},
  pages={13746-50}
}
Recently, local morphologic alterations of the brain in areas ascribable to the transmission of pain were reported in patients suffering from chronic pain. Although some authors discussed these findings as damage or loss of brain gray matter, one of the key questions is whether these structural alterations in the cerebral pain-transmitting network precede or succeed the chronicity of pain. We investigated 32 patients with chronic pain due to primary hip osteoarthritis and found a characteristic… CONTINUE READING
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