Ear-Zap device shows promise for arthritis hand pain

NCT ID NCT04520516

First seen Oct 31, 2025 · Last updated Jun 09, 2026 · Updated 38 times

Summary

This study tested a device that sends mild electrical pulses to the ear to stimulate the vagus nerve, aiming to reduce pain and inflammation in people with erosive hand osteoarthritis, a painful and hard-to-treat arthritis. 148 adults with this condition used either the active device or a sham (inactive) device for 12 weeks. The main goal was to see if the active device reduced hand pain more than the sham.

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Contacts and locations

Locations

  • Service de Rhumatologie - Hôpital Saint Antoine

    Paris, 75012, France

Conditions

Explore the condition pages connected to this study.