Etiology and Pathogenesis Wind cold invading the meridians Hyperactivity of liver Yang Difficult Undernourish Insufficiency of liver circulation ment of the blood of qi and meridians blood,Ying leading to Cold dampness and Wei contracture blocking the diaphragm Periarhritis of Qi stagnation and blood stasis shoulder Etiology and Pathogenesis Wind cold invading the meridians Hyperactivity of liver Yang Insufficiency of liver blood Cold dampness blocking the diaphragm Qi stagnation and blood stasis Difficult circulation of qi and blood,Ying and Wei Undernourish ment of the meridians leading to contracture Periarhritis of shoulder