Study summary

A wrist device that stimulates nerves reduced tremor more than sham

Wearable nerve stimulation trial · 125 people, randomized, sham-controlled · Published December 2025, JAMA Neurology

What was tested

A wearable device that stimulates the radial, median and ulnar nerves at the wrist and adapts using AI, used during waking hours for 90 days, against a sham device.

What they found

• Tremor scores improved more with real stimulation than sham.
• Skin irritation was the most common side effect (33.7% vs 4.8%).

What it means

A non-drug, non-surgical option for hand tremor.