Arya Nielsen PhD the following is from here website.
Gua sha is a healing technique of traditional East Asian medicine. Sometimes called “coining, spooning or scraping”, Gua sha is defined as instrument-assisited unidirectional press-stroking of a lubricated area of the body surface to intentionally create transitory therapeuitc petechiae called ‘sha’ representing extravasation of blood in the subcutis.
Modern research shows Gua sha produces an anti-inflammatory and immune protective effect that persists for days follwing a single Gua sha treatment. This accounts for its effect on Pain, stiffness, fever, chill, cough, wheeze, nausea and vomiting etc., and why Gua sha is effective in acute and chronic internal organ disorders including liver inflamation in hepatitis.
Arya Nielsen PhD is highly experienced acupuncturist, writer, and instructor. She is know as the most knowledge acupuncturist using Gau sha. You can go to her webiste Guasha.com for more information.