杵马齿苋汁饮之，以滓敷之。又用生麻油涂之。又浓煮大豆汁涂之。
《婴孺方》主丹入腹，及下至卵者不治方
麻黄（炒） 升麻（各三分） 硝石（四分）
上为末。以井花水服方寸匕，日三服。一方，加大黄半分。
《刘氏家传》治走马胎赤肿，走入心腹则不救方
生槐叶（一握） 生栝蒌（去皮，同槐叶擂） 赤白豆末（各三分）
上和涂患处，其效如神。
治一切丹瘤。
以土硝为末，姜汁、醋调涂，日三四上。（土硝即蜣螂土囊，蛴螬窠也） 蓖麻子五个，
去壳细研，入白面一钱，水调，微微涂之，甚妙。冷水杵茨菰叶茎，鸡翎扫，
肿便消。研护火草汁涂。研五叶草汁涂。水调大黄末涂。水研栀子仁涂。
水调黄芩末涂。水研蒴 汁涂。腊脂调屋尘涂。油调桦皮末涂。唾调粟米
粉涂。水研糯米汁涂。水煮白矾末涂。醋调红蓝花涂。煮白芷根叶涂。杵
鲤鱼令烂，涂。蜜和干姜末涂。水调地龙粪涂。杵大麻子汁涂。烧粉家洗
瓮水涂。水调韭畦中土涂。鸡清调榆根白皮涂。不犯水羊脂，炙涂，以白粉
敷之。研胡荽汁涂。醋磨诃子涂。杵鬼目汁涂。杵荏子汁涂。研酱取汁
涂。研地黄汁涂。研豆叶汁涂。研海藻汁涂。油、调豉末涂。水调青黛
涂。水研地龙涂。水煮粟米涂。酒煮石楠涂。水调鸡粪涂。杵梧桐皮涂。
苦汁涂。（并服）捣蒜涂。（治五色丹尤妙。）
《千金方》言∶凡方中用鸡子者，皆取先破者用之，它皆无力。又言∶凡天下
极冷，无过藻菜，但有患热肿毒丹等，取渠中藻菜，细切熟捣，敷丹上，浓三分，
干即易之。予谓不可以此涂，若毒在表，犹可措手，若抑之，则外不得泄，势必入
里，必先服托里药，方可施此。
Crush *Portulaca oleracea* (Purslane) with a mortar and pestle, drink the juice, and apply the dregs to the affected area. Additionally, apply raw sesame oil to the lesion. Alternatively, apply thickly boiled soybean juice to the area.
The *Yingru Fang* (Infant and Toddler Formulas) prescribes an untreatable formula for Dan entering the abdomen and spreading down to the scrotum:
*Ephedrae Herba* (Mahuang, 麻黄) (stir-fried), *Cimicifugae Rhizoma* (Shengma, 升麻) (each 3 fen), *Natrii Sulfas* (Xiaoshi, 硝石) (4 fen).
Grind the above into powder. Administer one fangcun bi (a measure of volume) with well water, three times daily. Another version adds *Rhei Radix et Rhizoma* (Dahuang, 大黄) by half a fen.
The *Liu Family Secret* provides a formula for Zoumatai (Running Horse Fetus) presenting as redness and swelling; if the pathogen enters the heart and abdomen, it is incurable:
Fresh *Sophorae Tonkinensis Folium* (Huaiye, 槐叶) (one handful), fresh *Trichosanthis Fructus* (Gualou, 栝蒌) (peeled, pounded together with Huaiye), powder of *Phaseoli Semen Rubrum* (Chidou, 赤豆) and *Vigna radiata* (Baidou, 白豆) (each 3 fen).
Mix evenly and apply to the affected area; the effect is miraculous.
Pound bamboo to extract juice, using one sheng (approx. 200ml) as a single dose; only one or two doses are needed for efficacy.
Pound Chinese chives (*Allium tuberosum*), add some salt and sesame oil, rub with hands until warm, and wipe over the Dan lesion; it heals immediately.
Treats all types of Dan liu (Dan tumors).
Grind *Natrii Sulfas* (Tuxiao, 土硝) into powder, mix with ginger juice and vinegar, and apply; apply three to four times daily. (Tuxiao refers to the earthen burrow of dung beetles or the nest of white grubs.) Five *Ricini Semen* (Bimazi, 蓖麻子), remove shells and grind finely, add one qian of *Triticum aestivum* flour (Baifan, 白面), mix with water, and apply lightly; this is very effective. Crush *Sagittaria sagittifolia* leaves and stems with cold water, sweep onto the area with a chicken feather brush; the swelling subsides immediately. Grind *Huhuo Cao* (Protect Fire Herb) juice and apply. Grind *Wuyecao* (Five-Leaf Herb) juice and apply. Mix *Rhei Radix et Rhizoma* (Dahuang, 大黄) powder with water and apply. Grind *Gardeniae Fructus* (Zhizi, 栀子) kernels with water and apply. Mix *Scutellariae Radix* (Huangqin, 黄芩) powder with water and apply. Grind *Podopteri Caulis* (Shudie, 蒴藋) juice with water and apply. Mix *Apis Ceranae Cera* (Lazhi, 腊脂 - beeswax from winter) with roof dust and apply. Mix *Betulae Cortex* (Huapi, 桦皮) powder with oil and apply. Mix *Oryza sativa* powder (Sumifen, 粟米粉) with saliva and apply. Grind *Oryza sativa glutinosa* (Nuomijian, 糯米汁) with water and apply. Boil *Alumen* (Baifan, 白矾) powder in water and apply. Mix *Carthami Flos* (Honglanhua, 红蓝花) with vinegar and apply. Boil *Angelicae Dahuricae Radix et Folium* (Baizhi, 白芷) roots and leaves and apply. Pound carp until mushy and apply. Mix *Zinci Melle* (Fengmi, 蜂蜜) with dried *Zingiberis Rhizoma* (Jiang, 干姜) powder and apply. Mix *Pheretima* (Dilong, 地龙) feces with water and apply. Pound *Cannabis Fructus* (Damaizi, 大麻子) juice and apply. Apply water used by lime-burners to wash their vats. Mix soil from leek beds with water and apply. Mix *Ulmus pumila* root bark (Yugenbaipi, 榆根白皮) with egg white and apply. Apply non-water-contacted *Ovis Aries Adip* (Yangzhi, 羊脂) after roasting, and cover with white powder. Grind *Coriandri Fructus* (Huisui, 胡荽) juice and apply. Grind *Terminalia chebula* (Hezi, 诃子) with vinegar and apply. Pound *Phytolaccae Radix* (Guimu, 鬼目) juice and apply. Pound *Perilla Fructus* (Renzi, 荏子) juice and apply. Grind fermented bean paste, take the juice, and apply. Grind *Rehmanniae Radix* (Dihuang, 地黄) juice and apply. Grind bean leaf juice and apply. Grind *Sargassum* (Haizao, 海藻) juice and apply. Mix *Sojae Semen Praeparatum* (Chimo, 豆豉) powder with oil and apply. Mix *Indigo Naturalis* (Qingdai, 青黛) with water and apply. Grind *Pheretima* (Dilong, 地龙) with water and apply. Boil *Oryza sativa* (Sumi, 粟米) and apply. Boil *Acanthopanacis Cortex* (Shinan, 石楠) with wine and apply. Mix *Gallus gallus domesticus* feces with water and apply. Pound *Platanus orientalis* bark and apply. Apply bitter juice. (Administer internally as well.) Pound garlic and apply. (Especially excellent for treating Wuse Dan / Five-Color Dan.)
The *Qianjin Fang* states: Whenever eggs are used in formulas, use those that have broken first; others lack potency. It also states: Among all things in the world, algae are the coldest. For conditions involving heat swelling, toxic Dan, etc., take channel algae, chop finely, cook, pound thoroughly, and apply to the Dan lesion to a thickness of about three fen; replace when dry. I believe this method should not be used for external application. If the pathogen is on the surface, it can still be managed; if suppressed forcibly, the pathogen cannot vent outward and will inevitably enter the interior. One must first administer formulas to support the interior and expel toxins before applying this method.