脉法四十

问曰曾为人所难紧脉从何而来师曰假令亡汗若吐以肺里寒故令脉紧也假令咳者坐饮冷水故令脉紧也假令下利以胃中虚冷故令脉紧也汗吐伤其胸中之阳肺寒则脉紧也咳者中寒而胃逆下利者中寒而脾陷冷水下利泄其胃阳则脉紧也