原要论 · 佚名 · Chapter 2 of 3

传硕公版书

自来医之一道,内症凭脉象,外症凭形状。外症惟痘 最关紧要,痘症见于古人坊本者甚多,而于治 则尚略。迩来痘 ,迥非昔比,调治非时,变为棘手。吾郡袁氏沈氏虞氏,有治抄本,其论症辨状,甚为了然。对症用药,亦极详慎,爰纠同志,登诸梨枣,以广厥传。至症之轻重,时之寒热,地之燥湿,则尤在高明者因宜增减,谅不泥于古也。

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