Nerve block aftermath: study probes mysterious rebound pain

NCT ID NCT06005480

First seen Nov 05, 2025 · Last updated May 08, 2026 · Updated 21 times

Summary

This study looked at why some people feel a sharp increase in pain after a local anesthetic (numbing shot) wears off, a phenomenon called rebound pain. Forty healthy volunteers received a nerve block in one arm and had their pain sensitivity measured as the block faded. The goal was to see if the nerve block itself makes the area more sensitive to pain temporarily.

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Contacts and locations

Locations

  • Brigham and Women's Hospital

    Boston, Massachusetts, 02115, United States

Conditions

Explore the condition pages connected to this study.