便毒一名骑马痈。此奇经冲任为病。而痈见于厥阴经之分野。共经多血。又名血疝。或
先有
疳疮而发。或卒然起核疼痛而发。皆热郁血聚而成也。初发宜疏利之。即散。或脓后如常用
托里内补之药。
一论便毒。是厥阴经湿热。因劳倦而发。用射干三寸。以生姜煎。食前服。得利二三行
立效。射干开紫花者是。
一论便毒极效方。
追毒散
当归尾 赤芍 白芷 金银花 天花粉（各一钱） 白僵蚕（炒六枚） 木鳖子（十个） 穿
山甲（二片） 大黄（三钱） 芒硝（二钱） 一方。加五灵脂更妙。
上锉一剂。好酒煎。露一宿。五更热服。浓盖发汗。利一二行即愈。其硝黄待群药煎将
熟方入。再二沸用之。一方。加射干。去芒硝。
一论鱼口便毒方。
神异散
金银花 天花粉 木鳖子（各二钱） 甘草（三分） 连翘 黄芩（各八分） 山栀子（七分）
穿山甲（炙二片） 皂角刺（三钱） 木香（五分） 大黄（三钱）
上锉一剂。酒水煎。空心服。
一治便毒肿痛神方。徐完愚传。
大黄 全蝎 蝉蜕 僵蚕 穿山甲（土炒成珠） 白芷梢 贝母 当归尾（各二钱）
上合一帖。水煎后。加入大黄。再煎二沸。去渣。入好生酒同服。如未散。加蜈蚣一条
同煎服。
一治鱼口疮方。用猪胆一枚。投热酒一碗。温服。即内消。
一治鱼口便毒方。
上为末。黄酒调下。
一治鱼口便毒方。陈云岳传。
僵蚕（炒三十六个） 穿山甲（土炒二钱） 蜈蚣（二条） 大黄（三钱） 甘草节（一钱） 杏
仁（去皮尖一钱） 五灵脂（二钱） 全蝎（一个） 皂角子（炒一钱） 金银花（一钱）
上锉一剂。酒水各半煎服。
Bian Du (Sores in the Groin), also known as Ma Yi Yong (Horse-riding Carbuncle), is a disease of the Chong Mai (Penetrating Vessel) and Ren Mai (Conception Vessel). The carbuncle manifests in the area governed by the Jueyin Meridian (Liver Meridian of Foot-Jueyin). This meridian is rich in blood, hence it is also called Xue Shan (Blood Hernia). It may develop after the occurrence of Gan Chuang (Chancre) or suddenly present as a painful nodule. All such cases are caused by the stagnation of heat and the accumulation of blood. In the initial stage, treatment should focus on promoting circulation and purging to resolve the swelling. If pus has formed, standard formulas for supporting the healthy qi and tonifying the interior should be used.
One discussion on Bian Du attributes it to damp-heat in the Jueyin Meridian, triggered by fatigue and overexertion. Treatment involves decocting 3 cun of Shé Gān (Belamcandae Rhizoma) with fresh ginger and administering it before meals. Relief is immediate upon having two or three bowel movements. The Shé Gān used should be the variety that bears purple flowers.
Another highly effective formula for Bian Du:
Zhui Du San (Pursuing Toxin Powder)
Dang Gui Wei (Tail of Angelicae Sinensis Radix), Chi Shao (Red Peony Root), Bai Zhi (Angelicae Dahuricae Radix), Jin Yin Hua (Lonicerae Japonicae Flos), Tian Hua Fen (Trichosanthis Radix) (each 1 qian); Bai Jiang Can (Bombyx Batryticatus) (6 pieces, stir-fried); Mu Bie Zi (Strychni Semen); Chuan Shan Jia (Pangolin Scales) (2 slices); Da Huang (Rhei Radix et Rhizoma) (3 qian); Mang Xiao (Natrii Sulfas) (2 qian). An alternative version suggests adding Wu Ling Zhi (Trogopterori Faeces) for better efficacy.
Grind these ingredients into one dose. Decoct in good-quality rice wine, leave exposed overnight, and take warm at dawn (Wu Geng). Cover thickly to induce sweating. Recovery occurs after one or two bowel movements. Add Mang Xiao and Da Huang only when the other herbs are nearly fully decocted, and boil twice more. Another variant adds She Gan and omits Mang Xiao.
A formula for Yu Kou Bian Du (Fish-mouth Sores in the Groin):
Shen Yi San (Miraculous Difference Powder)
Jin Yin Hua (Lonicerae Japonicae Flos), Tian Hua Fen (Trichosanthis Radix), Mu Bie Zi (Strychni Semen) (each 2 qian); Gan Cao (Licorice Root) (0.3 qian); Lian Qiao (Forsythiae Fructus), Huang Qin (Scutellariae Radix) (each 0.8 qian); Shan Zhi Zi (Gardeniae Fructus) (0.7 qian); Chuan Shan Jia (Pangolin Scales) (2 slices, roasted); Zao Jiao Ci (Gleditsiae Spina); Mu Xiang (Aucklandiae Radix) (0.5 qian); Da Huang (Rhei Radix et Rhizoma) (3 qian).
Grind into one dose. Decoct in a mixture of wine and water. Take on an empty stomach.
A miraculous formula for treating swollen and painful Bian Du, transmitted by Xu Wanyu:
Da Huang (Rhei Radix et Rhizoma), Quan Xie (Scorpio), Chan Tui (Cicada Slough), Jiang Can (Bombyx Batryticatus), Chuan Shan Jia (Pangolin Scales) (stir-fried in earth until pearl-like), Bai Zhi Shao (Tip of Angelicae Dahuricae Radix), Bei Mu (Fritillariae Bulbus), Dang Gui Wei (Tail of Angelicae Sinensis Radix) (each 2 qian).
Combine into one dose. Decoct in water, then add Da Huang and boil twice more. Strain, and take with good raw rice wine. If the swelling does not dissipate, add one Zhu Gong (Centipede) and decoct together.
A formula for treating Yu Kou Chuang (Fish-mouth Chancre):
Use one pig gallbladder, mix with one bowl of hot rice wine, and take warm. This will cause the lesion to resolve internally.
A formula for treating Yu Kou Bian Du:
Grind the above ingredients into powder. Mix with yellow rice wine and swallow.
A formula for treating Yu Kou Bian Du, transmitted by Chen Yunyue:
Jiang Can (Bombyx Batryticatus) (36 pieces, stir-fried); Chuan Shan Jia (Pangolin Scales) (2 qian, stir-fried in earth); Zhu Gong (Centipede) (2 pieces); Da Huang (Rhei Radix et Rhizoma) (3 qian); Gan Cao Jie (Node of Licorice Root) (1 qian); Xing Ren (Prunus Armeniaca Seed) (1 qian, peeled and core removed); Wu Ling Zhi (Trogopterori Faeces) (2 qian); Quan Xie (Scorpio) (1 piece); Zao Jiao Zi (Seed of Gleditsiae Spina) (1 qian, stir-fried); Jin Yin Hua (Lonicerae Japonicae Flos) (1 qian).
Grind into one dose. Decoct in half wine and half water, and take.