small fiber neuropathy
skin biopsy
long covid
Small Fiber Neuropathy and the Vagus: The Damage a Skin Biopsy Can Finally See
For years, people with burning pain, dizziness, and gut and heart symptoms were told the tests were normal and the problem was in their head. The tests were normal because they measured the wrong nerves. A simple skin biopsy measures the right ones — and can show, objectively, that the tiniest fibers are dying.
By VagusSkool Team
Jul 22, 2026