Etiology and Pathogenesis The aged or overstrain, Yin deficiency and Leading to decline of vital qi hyperactivity of Yang flaring up of liver Yang Preference for Accumulation of Obstruction alcohol and greasy phlegm dampness of the food,improper diet meridians Windstroke Emotional Excess fire of the Sudden rise stimulation heart of liver Yang Deficiency of qi Attack of the Guiding liver and blood exogenous wind wind to stir upEtiology and Pathogenesis The aged or overstrain, decline of vital qi Preference for alcohol and greasy food,improper diet Emotional stimulation Deficiency of qi and blood Yin deficiency and hyperactivity of Yang Accumulation of phlegm dampness Excess fire of the heart Attack of the exogenous wind Leading to flaring up of liver Yang Obstruction of the meridians Sudden rise of liver Yang Guiding liver wind to stir up Windstroke