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When there are worms in the anus, it is due to weak stomach Qi and empty intestines, allowing Ascaris lumbricoides (pinworms) to descend and invade. The anus is the external manifestation of the Large Intestine. Pinworms are one of the nine types of parasites.

[Qianglang Wan] (from *Shenghui Fang*) treats anal itching, or discharge of pus and blood, with worms breeding in the surrounding orifices.
Ingredients: Qianglang (Seven dung beetles, collected on the fifth day of the fifth lunar month, legs and wings removed, roasted and ground into powder), Xin Niufen (Half tael of fresh cow dung), Hao Fei Yangrou (One tael of good fatty mutton, stir-fried until fragrant). All ingredients are pounded into a paste-like consistency.

Another prescription (from *Shenghui Fang*)
Bai Jili (Half tael, stir-fried), Liuhuang (One fen, finely ground), Zhuya Zaojiao (One tael, burned to ash). Grind all ingredients into powder, mix evenly with Liuhuang. Mix with juice from Congxie (Scallion and leek).

Another prescription (from *Shenghui Fang*)
Xionghuang (Realgar), Fufen (Lead carbonate, half tael each). Grind the ingredients, use jujube flesh as a binder to form pills the size of lotus seeds. Wrap one pill in cotton, insert into the lower orifice (anus), and replace twice daily.

The anus is the external manifestation of the Large Intestine. If the Qi here is deficient, it is invaded by Wind-Heat pathogenic factors. The Heat qi clashes and combats, causing redness and pain in the anus.

[Bangling San] (from *Shenghui Fang*) treats Wind obstruction in the Large Intestine, where Qi toxicity attacks the anus, causing redness, swelling, and pain.
Ingredients: Banglang (Areca nut), Chuan Dahuang (Rhubarb root, roasted, one tael each), Chenxiang (Agarwood), Chi Shaoyao (Red Peony root), Fangfeng (Saposhnikovia root, remove rhizome), Xiong (Ligusticum chuanxiong), Xijiao Xie (Rhinoceros horn shavings), Gancao (Licorice root, roasted and cut, half tael each). Pound and sieve the ingredients into a powder. Take two qian per dose, add one bowl of water, decoct to six-tenths volume, remove dregs, and take warm.

[Niuzi San] (from *Shenghui Fang*) treats Wind-toxin in the Large Intestine, causing redness and pain in the anus, leading to irritability, heat sensation, and restlessness in sitting or lying down.
Ingredients: Niuzi (Burdock fruit, stir-fried), Chuan Dahuang (Rhubarb root, cut and stir-fried, one tael each), Huangqi (Astragalus root, cut), Bai Jili (Tribulus terrestris, stir-fried, remove spines), Zhike (Aurantium fruit, bran-roasted, remove core, three fen). Pound and sieve the ingredients into a powder. Take two qian per dose, add one bowl of water, decoct to six-tenths volume, remove dregs, and take warm before meals.

[Dahuang San] (from *Shenghui Fang*) treats the attack of Wind-Heat in the Large Intestine, causing redness and swelling of the anus.
Ingredients: Chuan Dahuang (Rhubarb root, cut and stir-fried), Huangqin (Scutellaria root), Huangqi (Astragalus root), Xuanshen (Rehmannia root, one tael each), Danshen (Salvia miltiorrhiza root, three fen), Chi Shaoyao (Red Peony root, half tael), Zhike (Aurantium fruit, one tael, bran-roasted). Pound and sieve the ingredients into a powder. Take two qian per dose, add one bowl of water, decoct to six-tenths volume, remove dregs, and take warm.

To treat Wind obstruction in the Large Intestine, where Qi toxicity attacks the anus, causing redness, swelling, and pain. (From *Shenghui Fang*)
Ingredients: Zhike (Aurantium fruit, bran-roasted, remove core), Xiong (Ligusticum chuanxiong), Chenxiang (Agarwood, half tael each), Chuan Puxiao (Mirabilite, one tael five qian), Chuan Dahuang (Rhubarb root, one tael, cut and stir-fried), Gancao (Licorice root, roasted and cut, half tael). Pound and sieve the ingredients into a powder. Take two qian per dose, add one bowl of water, decoct to six-tenths volume, remove dregs, and take warm.

Another prescription (from *Shenghui Fang*)
Zaojiao Shu Baipi (White bark of Gleditsia sinensis tree, one tael, coated with su [animal fat] and roasted), Gancao (Licorice root, half tael, roasted and cut), Zhike (Aurantium fruit, two fen, bran-roasted, remove core). Grind all ingredients into powder. Take two qian per dose, swallow with warm water before meals.

Prescription for treating the Gu Dao (anal opening) with redness, swelling, pain, and itching.
Use Xingren (Apricot seed) pounded into a paste and applied externally. Another method is to boil until yellow, pound, wrap in cotton, and apply/insert.

Another prescription (from *Bencao*)
Apply Xionghuang (Realgar) to the affected area; this is excellent.

To treat anal swelling and pain.
Remove the shell of Muguezi (Momordica charantia seed), take the meat of four or five seeds, grind into a paste, place in a new porcelain vessel or wooden basin. Use boiling water steam to fumigate and wash the affected area. Take a small amount of the paste and apply to the lesion.

Another prescription (from *Haishang Mingfang*)
Burn Zhike (Aurantium fruit) for fumigation, decoct Zhike for washing, and take Zhike powder internally as the superior treatment.

[Diyu San] (from *Yuyao Yuan Fang*) treats anal pain, itching, or swelling.
Ingredients: Diyu (Sanguisorba root), Jingjie Sui (Schizonepeta spike), Chuangzi (Cnidium fruit), Shuodi (Polygonum multiflorum vine), Kushen (Sophora flavescens root, equal parts). Cut the ingredients. Use one spoonful of medicine per dose, add one bowl of water, boil for two or three boils, remove dregs, and wash warm.

[Sanhuan Wan] (from *Wei Shi Fang*) treats anal swelling and pain, or passage of fresh blood.
Ingredients: Huanglian (Coptis rhizome), Huangqin (Scutellaria root), Dahuang (Rhubarb root). Grind into powder, bind with refined honey to form pills the size of Sophora seeds. Take forty pills per dose, swallow with cooked water.