How can we judge sympathetic denervation from the external manifestation in the human skin

Sympathetic denervation is associated with many diseases. Most cutaneous external monitoring indicators are non-invasive and used widely in clinical medicine. The external monitoring indicators of sympathetic denervation are reviewed to facilitate the clinical diagnosis of sympathetic diseases and the results of sympathectomy. Useful indicators of sympathetic denervation include sweating, warm skin, increased blood flow, Electrodermal Activity...