What are your thoughts on transauricular stimulation? My neurologist recommended to stimulate vagus nerve for autonomic disorder. Is it just a placebo effect OR can it do harm?

Stimulation. From the Journal Headache is an article that may help you.
Vagus Nerve and Vagus Nerve Stimulation, a Comprehensive Review: Part II
Hsiangkuo Yuan MD, PhD Stephen D. Silberstein MD
First published: 18 September 2015 https://doi.org/10.1111/head.12650 Citations: 32.