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Don't blame the block: Study finds nerve blocks alone don't increase pain sensitivity in healthy volunteers

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Nerve blocks—local anesthetic injections that block pain signals—are a valuable opioid-sparing technique for controlling pain after surgery. However, some patients experience temporary sharp increases in pain as the nerve block wears off. This phenomenon, often termed “rebound pain,” does not result from nerve hypersensitivity to painful testing (e.g., heat, pressure, punctate pain), reports a healthy volunteer study in the August issue of Anesthesiology.


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