泻血热
苦咸而寒，阴阳、冲、任之药。利阴气，下水气。
主中风身热支满，忽忽不知人（阴虚火旺，则内热主风。火气焚灼，故身热支满。痰随
火涌，故不知人），血厥（汗出过多血少，阳气独上，气塞不行而厥，妇人尤多。此证宜白
薇汤，白薇、当归各一两，参五钱，甘草钱半，每服五钱）热淋，温疟洒洒，寒热酸痛（寒
热作，则营气不能内营，故酸痛），妇人伤中淋露（血热。千金白薇散治胎前产后遗尿不知
时，白薇、芍药等分，酒调服。丹溪曰∶此即河间所谓热甚廷孔郁结，神无所依，不能收禁
之意也。廷孔，女人溺孔也），产虚烦呕（仲景安中益气竹皮丸用之。《经疏》曰∶古方调经
种子，往往用之。盖不孕缘于血热血少，而其源起于真阴不足，阳胜而内热，故营血日枯也。
益阴清热，则血自生旺而有子矣，须佐以归、地、芍药、杜仲、苁蓉等药）。
似牛膝而短小柔软。去须酒洗用。恶大黄、大戟、山茱、姜、枣。
宣，理气血，燥，逐寒湿
苦辛。生温，熟热。纯阳之性，能回垂绝之元阳。通十二经，走三阴（太、少、厥），
理气血，逐寒湿，暖子宫，止诸血，温中开郁，调经安胎（胎动腰痛下血，胶艾汤良，阿胶、
艾叶煎服，亦治虚痢）。
治吐衄崩带（治带要药），腹痛冷痢，霍乱转筋（皆理气血、逐寒湿之效），杀蛇治癣（醋
煎，外科有用干艾作汤，投白矾二三钱，洗疮，然后敷药者。盖人血气冷，必假艾力以佐阳
，而艾性又能杀虫也）。以之灸（音九）火，能透诸经而治百病。血热为病者禁用（灸火则
气下行，入药则热上冲，不可过剂。丹田气弱，脐腹冷者，以熟艾装袋，兜脐腹甚妙。寒湿
香港脚，亦宜以此夹入袜内）。
陈者良，揉捣如绵，谓之熟艾，灸火用。妇人丸散，醋煮捣饼，再为末用（入茯苓数片
同研，则易细）。煎服宜鲜者，苦酒（醋也）、香附为使（艾附丸，调妇人诸病。宋时重汤阴
艾，自明成化来，则以蕲州艾为胜。云灸酒坛，一灸便透。《蒙筌》、《发明》，并以野艾为真
蕲艾，虽香实非艾种）。
Clears heat from the blood level.
Bitter, salty, and cold in nature; it is a herb for regulating the Yin meridians, Chong Mai (Penetrating Vessel), and Ren Mai (Conception Vessel). It promotes the flow of Yin Qi and drains downward water-dampness.
It treats wind-stroke with body fever and distension/fullness in the chest and hypochondrium, sudden loss of consciousness (Yin deficiency with fire hyperactivity generates internal heat which produces wind. Fire burning and scorching causes body fever and distension/fullness. Phlegm surges with the fire, causing unconsciousness), Blood Jue syndrome (excessive sweating leads to blood depletion, Yang Qi rises alone, Qi blockage prevents circulation leading to syncope, especially common in women. This condition is suitable for Baiwei Tang [White Violet Decoction], composed of Baiwei [Cynanchum Atratum] and Danggui [Angelica Sinensis] each 1 liang, Renshen [Ginseng] 5 qian, Gancao [Licorice Root] 1.5 qian; take 5 qian per dose), hot Lin syndrome (dysuria), and the chills, fever, and body aches associated with Wen Nue (Warm Malaria) (When chills and fever occur, Ying Qi [Nutritive Qi] cannot nourish internally, causing aches). It treats women’s injury from internal damage resulting in continuous leukorrhea (due to blood heat; Qianjin Fang’s Baiwei San [White Violet Powder] treats enuresis before or after childbirth where the patient is unaware of the time, composed of equal parts Baiwei and Shaoyao [Peony Root], taken with wine. Zhu Danxi stated: This refers to Liu Hejian’s concept that extreme heat causes stagnation in the "Ting Kong" [urethral opening], leaving Shen [Spirit] without support and unable to retain fluids. Ting Kong refers to the female urethral opening]. It also treats postpartum deficiency-heat irritability and vomiting (Zhang Zhongjing used it in Anzhong Yiqi Zhupi Wan [An Middle and Boost Qi Bamboo Peel Pill]. *Jingshu* states: Ancient formulas for regulating menstruation and promoting conception often use it. Infertility is likely due to blood heat and blood deficiency, originating from insufficient True Yin, with Yang excess causing internal heat, thus depleting Ying Blood day by day. Nourishing Yin and clearing heat allows blood to regenerate and flourish, enabling conception; it should be assisted with herbs such as Danggui, Dihuang [Rehmannia], Shaoyao, Duzhong [Eucommia Bark], and Congrong [Cistanche]).
It resembles Niuxi [Achyranthes Bidentata] but is shorter, smaller, and softer. Remove the rootlets and wash with wine before use. It is incompatible with Dahuang [Rhubarb], Daji [Euphorbia Lathyris], Shanzhuyu [Cornus Officinalis], Jiang [Ginger], and Zao [Jujube].
Disperses, regulates Qi and Blood, drying, expels Cold-Dampness.
Bitter and acrid. Raw Aiye [Mugwort Leaf] is warm, while cooked Aiye is hot. It possesses pure Yang nature and can restore Yuan Yang [Primordial Yang] on the verge of collapse. It unblocks the Twelve Meridians and traverses the Three Yin meridians (Taiyin, Shaoyin, Jueyin), regulates Qi and Blood, expels Cold-Dampness, warms the uterus, stops various types of bleeding, warms the middle and resolves stagnation, regulates menstruation, and calms the fetus (for restless fetus with lower back pain and bleeding, Jiao’ai Tang [Donkey-Hide Gelatin and Mugwort Decoction] is excellent, made by decocting Ejiao [Donkey-Hide Gelatin] and Aiye; it also treats deficiency-type dysentery).
It treats hematemesis, epistaxis, metrorrhagia, and leukorrhea (a key herb for treating leukorrhea), abdominal pain with cold dysentery, Huoluan with muscle cramps (all are effects of regulating Qi/Blood and expelling Cold-Dampness), killing snakes and treating tinea (decocted with vinegar; in surgery, dry Aiye is sometimes boiled into a soup with 2-3 qian of Baifan [Alum] to wash sores before applying medicine. Since human Qi and Blood are cold, they must rely on Aiye’s power to assist Yang, and Aiye’s nature can also kill parasites). When used for moxibustion, it can penetrate all meridians to treat hundreds of diseases. It is contraindicated for diseases caused by Blood Heat (Moxibustion directs Qi downward, while oral administration sends heat upward; do not overdose. For those with weak Qi in the Dantian and cold umbilical/abdominal regions, packing cooked Aiye into a bag to cover the abdomen is very effective. For Cold-Dampness-induced podagra/jamming, it is also suitable to place it inside socks).
Aged Aiye is superior. Rubbed and pounded until cotton-like, it is called Shu Ai [Prepared Mugwort], used for moxibustion. For women’s pills and powders, boil with vinegar, pound into cakes, then grind into powder (adding several slices of Fuling [Poria] makes it easier to grind finely). For decoction, fresh Aiye is preferred; Vinegar (Cu) and Xiangfu [Cyperus Rotundus] serve as guiding herbs (Ai Fu Wan [Mugwort and Cyperus Pill] treats various women’s diseases. In the Song Dynasty, Tangyin Aiye was valued; since the Chenghua era of the Ming Dynasty, Qizhou Aiye has been considered superior. It is said that one application of moxa can burn through a wine jar. *Mengquan* and *Faming* consider wild Aiye to be true Qizhou Aiye; although fragrant, it is actually not the true species of Aiye).