经水将来，而脐腹绞痛，此血涩不行以作痛也。宜服通经汤。
通经汤
熟地黄 当归 川芎 白芍 川楝子（炒） 小茴香 槟榔 玄胡索 木香（各七分）
水煎食前服。
经来腰腹痛而气滞血实者，宜服桃仁汤。
桃仁汤
当归尾 赤芍 生地黄 香附（童便制） 牡丹皮 红花 玄胡索 桃仁（另捣如泥，冲服）
水煎，临服时入桃仁泥，空心服。形瘦有火，加条芩、黄连；形肥多痰，加枳壳、苍术、半夏。
经来小腹结成块，或如皂角一条横过，痛不可忍，面色青黄，不思饮食。宜服玄胡散，半月可愈。
玄胡散
玄胡索（四两） 头发灰（四钱） 为末，酒调下。
经来一半，余血未尽，腹中作痛，或发热或不发热。乃气血俱实也。宜服红花当归汤，破其余血，而热
自止。
红花当归汤
红花 当归 牛膝 苏木（各一钱） 川芎（五分） 枳壳（六分，麸炒） 莪术 赤芍 三棱 芫花（各八分）
水煎临卧服。
经来一半，遍身潮热，头痛口渴，小便作痛，此因伤食生冷，故血滞不行。内有余血，忌服补剂，宜服莪
术汤。
莪术汤
莪术 三棱 红花 苏木 牛膝
水煎空心服。
经尽作痛，手足麻痹，乃腹中虚冷也。血虚衰甚者，宜服四物汤加吴茱萸（滚汤泡炒）一钱。
四物汤
熟地黄 当归（各三钱，酒炒） 白芍（二钱，酒炒） 川芎（一钱）
姜枣为引，水煎服。
When menstruation is about to commence, colicky pain occurs in the umbilical and abdominal regions; this is due to sluggish blood flow causing obstruction. It is appropriate to administer Tongjing Tang (Unblocking Menses Decoction).
Tongjing Tang (Unblocking Menses Decoction)
Prepared Rehmanniae Radix (Shu Dihuang), Angelicae Sinensis Radix (Danggui), Chuanxiong Rhizoma (Chuanxiong), White Peony Root (Baishao), Fructus Toosendan (Chuanlianzi, stir-fried), Foeniculum Vulgare Fruit (Xiaohuixiang), Areca Seed (Binglang), Corydalis Rhizoma (Yanhusuo), Aucklandiae Radix (Muxiang) (each 0.21 g).
Decoct in water and take before meals.
If lower back and abdominal pain occur during menstruation accompanied by qi stagnation and blood excess/stasis, it is appropriate to administer Tao Ren Tang (Peach Kernel Decoction).
Tao Ren Tang (Peach Kernel Decoction)
Tail of Angelicae Sinensis Radix (Dangguiwei), Red Peony Root (Chishao), Raw Rehmanniae Radix (Sheng Dihuang), Cyperi Rhizoma (Xiangfu, processed with child's urine), Moutan Cortex (Mudanpi), Safflower (Honghua), Corydalis Rhizoma (Yanhusuo), Peach Kernel (Taoren, pounded separately into a paste and taken with the decoction).
Decoct in water. Just before taking, add the peach kernel paste. Take on an empty stomach. For patients who are thin with internal heat, add Scutellariae Radix (Huangqin) and Coptidis Rhizoma (Huanglian); for patients who are obese with excessive phlegm-dampness, add Aurantii Fructus (Zhike), Atractylodis Macrocephalae Rhizoma (Cangzhu), and Pinelliae Tuber (Banxia).
If hard masses form in the lower abdomen during menstruation, or if one feels as though a strip like a soap bean crosses horizontally, with unbearable pain, bluish-yellow complexion, and loss of appetite, it is appropriate to administer Yanhu San (Corydalis Powder). Recovery can be expected within half a month.
Yanhu San (Corydalis Powder)
Corydalis Rhizoma (Yanhusuo, 120 g), Ash of Human Hair (Toufa Hui, 12 g). Grind into powder, mix with wine, and take orally.
If menstruation stops halfway with residual blood remaining, causing abdominal pain, sometimes with fever and sometimes without, this indicates that both qi and blood are full and obstructed. It is appropriate to administer Honghua Danggui Tang (Safflower and Angelica Decoction) to break up the residual blood, after which the heat will subside naturally.
Honghua Danggui Tang (Safflower and Angelica Decoction)
Safflower (Honghua), Angelicae Sinensis Radix (Danggui), Achyranthis Bidentatae Radix (Niuxi), Calamus Wood (Sumu) (each 3 g), Chuanxiong Rhizoma (Chuanxiong, 1.5 g), Aurantii Fructus (Zhike, 1.8 g, stir-fried with bran), Curcuma Zedoaria Rhizoma (Ezhu), Red Peony Root (Chishao), Sparganii Rhizoma (Sanleng), Genkwa Flos (Yuanhua) (each 2.4 g).
Decoct in water and take before going to bed.
If menstruation stops halfway, accompanied by tidal fever over the whole body, headache, thirst, and painful urination, this is caused by injury from consuming raw and cold foods, leading to blood stasis and obstruction. Since there is residual blood internally, tonifying agents are contraindicated; it is appropriate to administer Ezhu Tang (Curcuma Zedoaria Decoction).
Ezhu Tang (Curcuma Zedoaria Decoction)
Curcuma Zedoaria Rhizoma (Ezhu), Sparganii Rhizoma (Sanleng), Safflower (Honghua), Calamus Wood (Sumu), Achyranthis Bidentatae Radix (Niuxi).
Decoct in water and take on an empty stomach.
If pain occurs after menstruation has completely ceased, accompanied by numbness of the hands and feet, this is due to deficiency-cold in the abdomen. In cases of severe blood deficiency, it is appropriate to administer Siwu Tang (Four Substances Decoction) plus Evodiae Fructus (Wuzhuyu, 3 g, soaked in boiling water and stir-fried).
Siwu Tang (Four Substances Decoction)
Prepared Rehmanniae Radix (Shu Dihuang), Angelicae Sinensis Radix (Danggui) (each 9 g, stir-fried with wine), White Peony Root (Baishao, 6 g, stir-fried with wine), Chuanxiong Rhizoma (Chuanxiong, 3 g).
Use fresh ginger and jujube as guides, decoct in water, and take orally.