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Dried Ginger (Sheng Jiang, Dried Ginger) [1 liang] and Aconite Root (Fu Zi, Prepared Aconite Lateral Root) [one piece, raw, peeled, cut into eight slices]. The above two ingredients are boiled in three sheng of water until one sheng remains. The dregs are removed, and the decoction is taken all at once.

After purgation followed by sweating, yin fluids are exhausted first, then yang qi is exhausted. During the day, there is irritability and restlessness with inability to sleep; at night, the patient is quiet. Yang deficiency presents with two types of symptoms: some patients prefer warmth/yang, while others fear it. Generally, those with concurrent yin deficiency fear warmth/yang, whereas those without yin deficiency prefer it. In this case, because purgation has also damaged yin, the patient fears warmth/yang. With no vomiting, no thirst, no exterior syndrome, a deep and faint pulse, and no significant fever on the body, the pathogenic factor has retreated, but yang qi is weak. Therefore, only Dried Ginger and Aconite Root are used to restore yang. The principal formula is Ganjiang Fuzi Tang (Dried Ginger and Aconite Decoction).

Ganjiang Fuzi Tang (Dried Ginger and Aconite Decoction): Add four stalks of Scallion White (Cong Bai, Allii Fistulosi Bulbus) to the original prescription. The decoction and administration method remain as described above.

Shaoyin disease (Shaoyin Syndrome) presenting with diarrhea is treated primarily with Baitong Tang (White Passage Decoction). This formula specifically treats Shaoyin diarrhea; Scallion White is used to unblock the yang qi of the Shaoyin channel.

Baitong Tang (White Passage Decoction): Add five he of Human Urine (Ren Niao, Urina Humana) and one he of Pig Gallbladder Juice (Zhu Dan Zhi, Bile Porci) to the original prescription. The above three ingredients are boiled in three sheng of water until one sheng remains. The dregs are removed, and the bile juice and human urine are added and mixed well. The mixture is divided into two doses and taken warm. If bile is unavailable, it may be omitted.

In Shaoyin disease with diarrhea and a faint pulse, administer Baitong Tang (White Passage Decoction). If diarrhea persists, accompanied by cold extremities, absence of pulse, dry heaving, and vexation, the condition indicates blockage of both upper and lower jiao due to the absence of pulse and cold extremities, along with vomiting and vexation. Yin and yang repel each other (mutual rejection); therefore, Pig Gallbladder Juice and Human Urine are added to guide the yang-tonifying herbs to the extreme yin level to unblock the flow. This corresponds to the principle stated in Neijing (The Inner Canon): "Use counter-assistance to obtain the desired effect." The principal formula is Baitong Jia Zhudanhui Tang (White Passage Decoction with Pig Gallbladder and Human Urine). If the pulse suddenly bursts forth after taking the medicine, death ensues; if the pulse gradually returns, life is preserved. A sudden burst is forced by the drug's potency; when the potency wears off, qi perishes. A gradual return indicates the natural recovery of righteous qi, thus survival is possible.

The Shaoyin Chapter states: "In Shaoyin disease, if diarrhea is unceasing, the patient feels aversion to cold and lies curled up, but the hands and feet are warm, the prognosis is favorable." Thus, the presence or absence of yang should be verified by whether the hands and feet are warm. Previously, it was stated that "if the pulse appears immediately, the patient recovers." Here, it is stated that "if the pulse bursts forth suddenly, the patient dies." It is evident that "sudden bursting" differs from "immediate appearance." "Sudden bursting" means emerging all at once; "immediate appearance" refers to the pulse slowly and gradually returning shortly after taking the medicine. These distinctions must be carefully understood.