〔海〕头汗出，剂颈而还，血证也。额上偏多何谓也？曰∶首者，六阳之所会也，故热熏蒸而
汗出也。额上偏多，以部分，左颊属肝，右颊属肺，鼻属中州，颐属肾，额属心。三焦之火涸其肾
水，沟渠之余迫而上，入于心之分，故发为头汗，而额上偏多者，属心之部，而为血证也。饮酒饮食
头汗出者，亦血证也。至于杂证，相火迫肾水上行入于心，为盗汗，或自汗，传而为头汗出者，或
心下痞者，俱同血证例治之。无问伤寒杂病酒积，下之而心下痞者，血证也。何以然？曰∶下之
亡阴，亡阴者，则损脾胃而亡血，气在胸中以亡其血，陷之于心之分也，故心下痞。世人以为血
病，用气药导之，则痞病愈甚。而又下之，故变而为中满彭胀，非其治也。如此然当作何治？
独益中州脾土，以血药治之，其法无以加矣。
一男子手足汗，医用芩、连、柏并补剂皆不效，又足汗常多，后以八物半苓为君，白附、
川乌佐使，其汗
即无。
〔《本》〕治脚汗。
白矾 干葛（各等分）
上二味为末，每半两，水三碗，煎十数沸洗，逐日一次，缠三五日自然无汗。
〔《灵》〕夺血者无汗，夺汗者无血。（荣卫生会篇）
〔垣〕真气已亏，胃中火盛，汗出不休，胃中真气已竭。若阴火已衰，无汗反燥，乃阴中之阳，
阳中之阳俱衰，四时无汗，其形不久，湿衰燥旺，理之常也。其形不久者，秋气主杀，生气乃竭。
生气者，胃之谷气也，乃春少阳生化之气也。
〔丹〕盛夏浴食无汗者，为表实。（见心痛表里条。）
杨顺二官子，患脉涩而短，重取而弱，此久受湿伤血，多年无汗，遇劳身热倦怠，如沙病状。
苍术 白术 芍药（各半两） 陈皮（六两） 归身（二两） 甘草 红花（各半两）
分六帖，姜三片，煎服。
谢老形实，夏月无汗，成久嗽病。
半夏 苏叶
二味为末，入莎末、枕流末、仁陷末，以栝蒌穣、桃仁泥半两为丸，先服三拗汤三帖，
却服此丸子。（详枕流末，蚬壳灰、蛤粉之类。仁陷末，神曲也。）
〔《甲》〕汗不出，曲差主之。
[Hai Zang] Sweating on the head that stops at the neck is a blood syndrome. Why is sweating more prominent on the forehead? The answer is: The head is the convergence point of the six Yang meridians, so heat steaming causes sweating. Sweating is more prominent on the forehead because different body parts correspond to specific organs: the left cheek corresponds to the Liver, the right cheek to the Lung, the nose to the Central Region (Spleen and Stomach), the chin to the Kidney, and the forehead to the Heart. Fire in the Sanjiao depletes Kidney Water, and residual pathogens from the channels force their way upward into the region belonging to the Heart, thus causing head sweating. The prominence of sweating on the forehead belongs to the Heart's region and is therefore classified as a blood syndrome. Head sweating after drinking alcohol or eating also belongs to a blood syndrome. As for other miscellaneous diseases, if Ministerial Fire forces Kidney Water upward into the Heart, causing night sweats (sweating during sleep) or spontaneous sweating (sweating without exertion or heat), which then develops into head sweating, or is accompanied by epigastric fullness (a sensation of blockage in the stomach area), all should be treated according to the principles for blood syndromes. Whether it is Cold Damage, miscellaneous diseases, or alcohol accumulation, if epigastric fullness occurs after purgation, it is also a blood syndrome. Why is this? The answer is: Purgation damages Yin fluids; loss of Yin fluids damages the Spleen and Stomach and leads to loss of Blood. Qi in the chest, having lost its blood foundation, sinks into the region belonging to the Heart, thus causing epigastric fullness. People mistakenly believe it is a blood disease and use Qi-regulating drugs to guide it, which worsens the fullness. If purgation is used again, it transforms into abdominal distension and bloating, which is not the correct treatment. How should such cases be treated? One must only tonify the Earth of the Central Region (Spleen) and treat with blood-nourishing herbs; there is no better method than this.
A male patient had sweating on his hands and feet. Physicians used Huangqin (Scutellariae Radix), Lianlian (Coptidis Rhizoma), Bailan (Phellodendri Cortex), and tonics without effect, and foot sweating was particularly profuse. Later, using Bawu Tang combined with Banling Tang as the principal formula, with Baifu Zi (Aconiti Kusnezoffii Radix Preparata) and Chuanwu (Aconiti Radix) as assistant and guiding drugs, the sweating ceased immediately.
[Ben Cao] Treatment for foot sweating.
Baifan (Alum) Gan Ge (Puerariae Lobatae Radix) (equal parts)
Grind these two ingredients into powder. Take half tael each time, boil in three bowls of water for about ten boils, and wash with the decoction. Do this once daily, wrap/bind for three to five days, and sweating will naturally cease.
[Ling Shu] Those who have lost blood do not sweat; those who have lost sweat do not lose blood. (From the Chapter Ying Wei Sheng Hui)
[Li Dongyuan] When True Qi is already deficient and Stomach Fire is excessive, continuous sweating indicates that True Qi in the Stomach is exhausted. If Ministerial Fire has declined, leading to dryness without sweating, it signifies the decline of Yang within Yin and Yang within Yang. Absence of sweating in all four seasons implies a short lifespan. Decline of dampness and excess of dryness is the normal order. The implication of a short lifespan arises because Autumn Qi governs killing/drying, causing Sheng Qi (Vitality/Qi of growth) to exhaust. Sheng Qi refers to the grain Qi of the Stomach, which is the generating Qi of Spring Shaoyang.
[Zhu Danxi] Absence of sweating during bathing or eating in midsummer indicates Exterior Excess. (See the section on Pain in the Heart: Exterior and Interior.)
The son of Official Yang Shun suffered from a choppy and short pulse, weak upon heavy pressure. This resulted from long-term damage to Blood by Dampness, causing absence of sweating for many years. Upon exertion, he experienced fever and fatigue, resembling symptoms of Sha Bing (a chronic wasting disease).
Cang Zhu (Atractylodis Rhizoma) Bai Zhu (Atractylodis Macrocephalae Rhizoma) Shao Yao (Paeoniae Radix Alba) (each half tael) Chen Pi (Citri Reticulatae Pericarpium) (six taels) Dang Gui Shen (Angelicae Sinensis Radix - root portion) (two taels) Gan Cao (Glycyrrhizae Radix et Rhizoma) Hong Hua (Carthami Flos) (each half tael)
Divide into six doses. Add three slices of fresh ginger, decoct, and take orally.
Old Man Xie had a robust constitution but no sweating in summer, leading to chronic cough.
Ban Xia (Pinelliae Tuber) Su Ye (Perillae Folium)
Grind these two into powder. Add Sha Cao Mo (Carex/Miscellaneous grass powder), Zhen Liu Mo (Pillow Stream Powder - see note), Ren Xian Mo (God Qu/Powdered Medicated Leaven - see note). Form pills using Gua Lou Rang (Trichosanthis Pericarpium pulp) and Tao Ren (Persicae Semen) paste, half tael each. First, administer San Ao Tang for three doses, then take these pills. (Detailed explanation: Zhen Liu Mo refers to things like Xiàn Qiè Huī (Clam Shell Ash) and Ha Fen (Tridacnidae Testum); Ren Xian Mo refers to Shen Qu (Medicated Leaven).)
[Jia Yi Jing] For absence of sweating, Qu Cha (BL17) is indicated.