Pain medicine : the official journal of the American Academy of Pain Medicine
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Background. Previous reports have indicated that ketamine anesthesia may produce significant improvement if not complete recovery of patients with complex regional pain syndrome (CRPS). Aims. ⋯ The observed changes in brain response to evoked stimuli provide a readout for the subjective response. Conclusion. Future studies of brain function in these patients may provide novel insight into brain plasticity in response to this treatment for chronic pain.