少阴证。口燥舌干而渴。脉尺寸俱沉疾。则（大承气汤）沉迟。则（四逆汤）。
少阴邪入于里。上接于心。与火俱化而克金。恶候。或见气死入胃。脉沉细而疾。疾则
大承气
可下。若疾而无力者。亦不可下。为阳将尽也。
少阴证。口燥舌干而渴。身表凉。脉沉细而虚。（泻心汤）主之。此有形无形之药也。
伤寒外证全在下证。大热而脉反细小。不可下。泻心汤主之。少阴受病。身凉无汗体沉
。或体轻脉沉。有头痛不厥。（麻黄附子泻心汤）主之。
其人病身热而烦躁不宁。大小便自利。其脉浮洪而无力。按之全无者。（附子泻心汤）主
之。
其人病上吐下泻不止。当渴而反不渴。其脉微细而弱。（理中汤）主之。渴而脉沉有力而
疾者。（五苓散）主之少阴证发热脉沉者。必当汗。
缓汗之。（麻黄附子细辛汤）
微汗之。（麻黄附子甘草汤）
热者（甘草汤） 寒者（半夏汤） 寒热者。（桔梗汤） 通脉（四逆汤）。
姜附加甘草为脉沉细而迟弦。姜附以治寒甘以缓之。为汗苦急也。其证小便自利。于能
令母实自东之北为逆行也。
姜附加葱白为脉沉细而迟涩姜附以治寒辛以润之为肾恶燥也其证大便自利冷主气自北而
西此亦以为逆行也
少阴病证。表现为口燥、舌干且口渴。若脉象在寸部和尺部都呈现沉而疾速的特征，则使用大承气汤；若脉象沉迟，则使用四逆汤。
少阴之邪深入体内，向上连接于心，与心火共同变化从而克制肺金。这是凶险的征候。有时可见气绝入胃的症状，脉象沉细而疾速。若脉疾速有力，可以使用下法（攻下）；若脉疾速但无力，也不可攻下，这是因为阳气即将耗尽的缘故。
少阴病证。表现为口燥、舌干且口渴，身体表面发凉，脉象沉细而虚弱。以泻心汤为主治方剂。这是针对有形实邪或无形虚热的用药区别。
伤寒的外在证候完全转化为内在的里实证时，若出现大热但脉象反而细小，不可攻下，应以泻心汤主治。少阴经受病，表现为身体发凉、无汗、身体沉重；或者身体轻爽但脉象沉，伴有头痛但未出现四肢厥冷。以麻黄附子泻心汤主治。
患者患病后身体发热且烦躁不安，大小便自然通畅。其脉象浮洪但无力，重按完全空虚。以附子泻心汤主治。
患者患病后上吐下泻不止，应当感到口渴却反而不渴。其脉象微细而弱。以理中汤主治。若口渴且脉象沉而有力且疾速，则以五苓散主治。少阴病证出现发热且脉象沉的，必须采用发汗法。缓慢发汗用麻黄附子细辛汤；轻微发汗用麻黄附子甘草汤。
有热证的用甘草汤；有寒证的用半夏汤；寒热错杂的用桔梗汤；脉不通的用四逆汤。
生姜加入附子，适用于脉象沉细而迟且弦的情况。姜和附子用来治疗寒证，甘味药用来缓和药性，因为发汗之法过于急迫。此证小便自利，能使母脏充实，从东方至北方为逆行。
生姜加入附子和葱白，适用于脉象沉细而迟且涩的情况。姜和附子用来治疗寒证，辛味药用来滋润，因为肾厌恶燥湿。此证大便自利，冷主气，从北方至西方，这也称为逆行。
Shaoyin Syndrome. Manifestations include dryness of the mouth, dry tongue, and thirst. If the pulse is deep and rapid at both the Cun (inch) and Chi (cubit) positions, Da Cheng Qi Tang (Major Order the Qi Decoction) is indicated; if the pulse is deep and slow, Si Ni Tang (Frigid Extremities Decoction) is indicated.
When Shaoyin pathogenic factors penetrate inward, they connect upward with the Heart, transform jointly with Fire, and thereby overcome Metal (Lung). This is a malignant sign. Occasionally, signs of Qi failure entering the Stomach may appear, with a pulse that is deep, fine, and rapid. If the rapid pulse is forceful, purgation (downward draining) may be employed; if the rapid pulse is forceless, purgation must not be used, as this indicates that Yang Qi is nearly exhausted.
Shaoyin Syndrome. Manifestations include dryness of the mouth, dry tongue, thirst, coolness of the body surface, and a pulse that is deep, fine, and deficient. Xie Xin Tang (Drain the Epigastrium Decoction) is the primary treatment. This distinguishes between medications for tangible pathogens and intangible conditions.
When the exterior symptoms of Cold Damage (Shanghan) fully transform into interior excess syndromes, if there is high fever but the pulse is unexpectedly fine and small, purgation is contraindicated; Xie Xin Tang (Drain the Epigastrium Decoction) should be used. When the Shaoyin Meridian is affected, manifestations include cool body, absence of sweating, heaviness of the body; or lightness of the body with a deep pulse, accompanied by headache but without cold extremities. Ma Huang Fu Zi Xie Xin Tang (Ephedra, Prepared Aconite, and Drain the Epigastrium Decoction) is indicated.
If the patient suffers from fever, restlessness, and agitation, with free urination and defecation, and the pulse is floating and large but forceless, vanishing completely upon heavy pressure, Fu Zi Xie Xin Tang (Prepared Aconite and Drain the Epigastrium Decoction) is indicated.
If the patient suffers from incessant vomiting and diarrhea, feels thirsty yet paradoxically does not desire water, and the pulse is faint, fine, and weak, Li Zhong Tang (Regulate the Middle Decoction) is indicated. If there is thirst with a deep, forceful, and rapid pulse, Wu Ling San (Five-Ingredient Powder with Poria) is indicated. In Shaoyin Syndrome with fever and a deep pulse, diaphoresis (sweating method) is necessary. For slow diaphoresis, Ma Huang Fu Zi Xi Xin Tang (Ephedra, Prepared Aconite, and Asarum Decoction) is used; for mild diaphoresis, Ma Huang Fu Zi Gan Cao Tang (Ephedra, Prepared Aconite, and Licorice Decoction) is used.
A bluish complexion indicates the need for purgation; a non-bluish complexion indicates the need for warming.
A normal/moist mouth indicates the need for warming; a dry mouth indicates the need for purgation.
Heat patterns are treated with Gan Cao Tang (Licorice Decoction); Cold patterns are treated with Ban Xia Tang (Pinellia Decoction); Cold-Heat complex patterns are treated with Jie Geng Tang (Platycodon Decoction); Unblocked vessels are treated with Si Ni Tang (Frigid Extremities Decoction).
Adding Sheng Jiang (Fresh Ginger Rhizome) to Fu Zi (Prepared Aconite Root) is suitable for pulses that are deep, fine, slow, and wiry. Ginger and Aconite treat Cold, while Sweet herbs缓 (huan, soothe/moderate) the action, because diaphoresis can be too urgent. With free urination in this pattern, it can strengthen the Mother organ; movement from East to North is considered retrograde.
Adding Sheng Jiang (Fresh Ginger Rhizome), Fu Zi (Prepared Aconite Root), and Cong Bai (Scallion White) is suitable for pulses that are deep, fine, slow, and choppy. Ginger and Aconite treat Cold, while Pungent herbs moisten, because the Kidney dislikes dryness. With free defecation in this pattern, Cold governs Qi; movement from North to West is also considered retrograde.