How is the contraction caused?

Traditional Chinese medicine has many discussions on the etiology, pathology and clinical manifestations of yin contraction syndrome. It is believed that yin contraction syndrome is caused by the dysfunction of liver and kidney organs, which is often related to the following factors: 1. deficiency of kidney-yang or deficiency of body yang or injury of kidney-yang after serious illness and prolonged illness, resulting in fire failure of vital gate, excessive yin and cold inside, and sudden contraction of zong-tendon due to deficiency of warm zong-tendon; 2. cold stagnation of liver pulse suddenly causes cold evil, stagnation of liver pulse, resulting in acute stagnation of liver tendon and contraction of zong-tendon inside. 3. Liver failure to regulate and discharge, emotional failure, Jiao deficiency and anger, resulting in liver failure to regulate and discharge, qi stagnation, liver tendon adverse, zong-tendon arrest and acute onset of the disease. 4. Yin deficiency and fire excess or liver and kidney yin deficiency of the body or fever injury to yin or atrioventricular disorder, addiction to spicy and warm and dry products, resulting in liver and kidney yin deficiency, resulting in liver tendon failure to nourish, arrest and acute contraction. 5. Heat depression and Jueyin or liver depression and heat of the body or yang heat of the body, resulting in heat pathogen, heat depression and Jueyin, burning meridians, resulting in zong-tendon arrest and acute onset of the disease.