Results : Etiopathogenisis and pathogenesis are natural endowment weakness, being invaded by exogenous pathogen, blocking meridian, Qi and blood to be on bad terms;
结果：白癜风的病因病机为禀赋不耐，感受外邪，阻滞经络，气血失和；
Base pathogenesis of respiratory tract viral infection is phlegm-heat obstruction in the lung, so cooling and dispersing therapy can drive away stagnated exogenous pathogen.
中医认为呼吸道病毒感染的主要病因为外感风热时邪，基本病机为痰热壅肺，清法和宣法可以给邪以出路，驱邪外出；
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