病源三虫者，长虫赤虫蛲虫为三虫也，犹是九虫之数也，长虫者，蛔虫也，长一尺，动
则吐清水，出则心痛，贯心则死，赤虫状如生肉，动则肠鸣，蛲虫细微，形如菜虫也，居胴
肠之
九虫
方补
脚，
七过
三
肘后疗三虫方。
茱萸根（取东引指大者长一尺） 栝蒌（四两切）
上二味，细锉茱萸根，以酒一升渍之一宿，旦绞去滓，宿勿食，旦空腹先吃脯，然后顿
服之，小儿分三服，亦疗寸白虫。
又方
捣桃叶，绞取汁，饮一升。（千金集验同一方云平旦饮三合）
又方
真珠（一两研） 乱发（如鸡子大烧末）
上二味纳苦酒中，旦空腹顿服之，令尽。（集验范汪同千金治蛲虫）
又三虫者，谓长虫赤虫蛲虫也，乃有九种，而蛲虫及寸白人多病之，寸白从食牛肉饮白
酒所
除之
不利
范汪疗三虫，白蔹丸方。
白蔹 野狼牙 芦 桃花 贯众（各三分） 橘皮（二分） 芜荑（一分）
上七味捣筛，蜜丸如小豆大，宿勿食，旦以浆水服一剂，日中乃食立下，男子病大腹面
黄，欲食肉，服此药下赤虫如笋茎者一尺，所有头目百余枚，病愈，又九江谢丘病胁下有积
大如
有口
者百
又疗三虫，竹节丸方
烧竹节 雷丸（各三分） 锡屑（二分） 橘皮（一分半）
上四味捣筛，蜜丸如梧子大，一服八丸，日三服。
又疗三虫，芎 散方
芎 雷丸 桔梗 白芷（各四分）
上四味捣散，以蜜饮苦酒或米汁服方寸匕，日三服，又可用蜜丸如梧子，吞十三丸，当
稍稍下，不尽更服一剂。（出第十九卷中）
备急疗三虫方。
芦（四两炙） 干漆（二两熬） 吴茱萸（四两）
上三味为末，依前先嚼脯，以粥清服方寸匕，日一服。（肘后范汪同）
病源篇中提到的三虫，是指长虫、赤虫和蛲虫，它们也属于九虫的范畴。所谓长虫，就是蛔虫，身长一尺，活动时呕吐清水，若钻出则导致心痛，若穿透心脏则致死；赤虫形状像生肉，活动时肠鸣；蛲虫细微，形状像菜虫一样。
《肘后备急方》治疗三虫的方剂：
茱萸根（选取向东生长的、手指粗细、长一尺的） 栝蒌（四两，切片）
以上两味药，将茱萸根细切，用酒一升浸泡一夜，早晨绞取汁液去渣，前一晚不要进食，早晨空腹先吃些肉干，然后一次性服用。小儿分三次服用。此方也治疗寸白虫。
又一方：
捣碎桃叶，绞取汁液，饮用一升。（《千金要方》与《集验方》同一方剂记载为清晨饮用三合）
又一方：
真珠（一两，研细） 乱发（如鸡蛋大小，烧成炭末）
以上两味药放入醋中，早晨空腹一次性服用完。（《集验方》与《范汪方》相同，《千金要方》用于治疗蛲虫）
另外，所谓的三虫，是指长虫、赤虫和蛲虫，实际上有九种，而蛲虫及寸白虫是许多人容易患上的疾病。寸白虫是由于食用牛肉、饮用白酒所引起……（原文此处有残缺/脱漏，意指病因或治疗相关描述）。
《范汪方》治疗三虫的白蔹丸方：
白蔹 野狼牙 芦 桃花 贯众（各三分） 橘皮（二分） 芜荑（一分）
以上七味药捣碎过筛，用蜂蜜制成如小豆大小的丸剂，前一晚不要进食，早晨用浆水送服一剂，中午才能进食。服药后虫体随即排出。男子若患大腹病且面色发黄，想吃肉，服用此药后可排出红色的虫体，状如笋茎，长达一尺，头部和眼睛有一百多个，病即痊愈。又有九江人谢丘，胁下有积聚物，大如……（原文残缺）……有口者一百……（原文残缺）。
又治疗三虫的竹节丸方：
烧竹节 雷丸（各三分） 锡屑（二分） 橘皮（一分半）
以上四味药捣碎过筛，用蜂蜜制成如梧桐子大小的丸剂，每次服用八丸，每日三次。
又治疗三虫的芎䓖散方：
芎䓖 雷丸 桔梗 白芷（各四分）
以上四味药捣成散剂，用蜂蜜、醋或米汁送服一方寸匕，每日三次。也可以用蜂蜜制成如梧桐子大小的丸剂，吞服十三丸，应当逐渐排出虫体，若未排尽再服用一剂。（出自第十九卷中）
《备急方》治疗三虫的方剂：
芦 干漆（二两，熬制） 吴茱萸（四两）
以上三味药制成粉末，依照前述方法先嚼食肉干，用粥清送服一方寸匕，每日一次。（《肘后备急方》与《范汪方》相同）
According to the *Bing Yuan* (Pathogenesis), the "Three Worms" refer to Changchong (Ascaris lumbricoides, large roundworm), Chichong (Red worm), and Naochong (Pinworm). These are also included in the count of the "Nine Worms." Changchong is Ascaris lumbricoides; it is one chi long. When active, it causes vomiting of clear fluid; if it moves out, it causes heart pain; if it penetrates the heart, it leads to death. Chichong resembles raw meat; when active, it causes borborygmus (intestinal rumbling). Naochong is minute, resembling a vegetable worm.
**Formula from *Zhouhou Beiji Fang* for Treating the Three Worms:**
Cortex Evodiae Radicis (*Wuzhuyu*, specifically the root) [Select those growing eastward, about the thickness of a finger, one chi long] Trichosanthis Fructus (*Gualou*) [Four liang, sliced]
Crush the Cortex Evodiae Radicis finely, soak in one sheng of wine overnight. In the morning, squeeze out the juice and remove the dregs. Do not eat the previous night. In the morning, on an empty stomach, first consume some dried meat, then take the decoction all at once. For children, divide into three doses. This formula also treats Taenia saginata (Taenia, white tapeworm).
**Another Formula:**
Pound peach leaves, squeeze out the juice, and drink one sheng. (*Qianjin Yaofang* and *Jiyan Fang* record this same formula as drinking three he in the early morning.)
**Another Formula:**
Margarita Perla (*Zhenzhu*) [One liang, ground] Capillitium (*Luancha*) [Size of a chicken egg, burned to ash]
Mix the two ingredients in vinegar. Take on an empty stomach in the morning all at once until finished. (*Jiyan Fang* and *Fan Wang Fang* are identical; *Qianjin Yao* uses it for treating Pinworm.)
Furthermore, the so-called "Three Worms" refer to Changchong, Chichong, and Naochong. There are actually nine types, but Pinworm and Taenia saginata are commonly contracted by many people. Taenia saginata is caused by eating beef and drinking white wine... [Text fragment missing].
**White Peony Pill (*Bailian Wan*) from *Fan Wang Fang* for Treating the Three Worms:**
Ampelopsis Radix (*Bailian*) Sibiric Bistort Rhizome (*Yelangya*) Arundo Rhizoma (*Lu*) Peach Blossom (*Taohua*) Cyathulae Radix (*Guanzhong*) Tangerine Peel (*Juapi*) Myrabolana Fructus (*Wuyi*) [Each: three fen]
Pound and sieve the seven ingredients. Make pills with honey the size of small beans. Do not eat the previous night. In the morning, take one dose with jiangshui (fermented grain liquid). Food may be taken at noon. The worms will be expelled immediately. If a man suffers from abdominal distension and yellow complexion, desiring meat, taking this medicine will expel red worms resembling bamboo shoots, one chi long, with over a hundred heads and eyes, curing the disease. Another case: Xie Qiu from Jiujiang had an accumulation under the hypochondrium, large as... [Text fragment missing] ...with mouths, one hundred... [Text fragment missing].
**Bamboo Joint Pill (*Zhujie Wan*) for Treating the Three Worms:**
Burned Bamboo Joint (*Shao Zhujie*) Polyporus Umbellatus (*Leiyuan*) [Each: three fen] Tin Shavings (*Xixie*) [Two fen] Tangerine Peel (*Juapi*) [One and a half fen]
Pound and sieve the four ingredients. Make pills with honey the size of wetast seeds. Take eight pills per dose, three times daily.
**Xiongqiong Powder (*Xiongsan*) for Treating the Three Worms:**
Szechwan Lovage Rhizome (*Xiongyao*) Polyporus Umbellatus (*Leiyuan*) Platycodon Root (*Jiegeng*) Angelica Dahurica (*Baizhi*) [Each: four fen]
Pound the four ingredients into powder. Take one fangcunbi (square-inch measure) with honey, vinegar, or rice water, three times daily. Alternatively, make pills with honey the size of wetast seeds, swallow thirteen pills. The worms should be gradually expelled. If not fully expelled, take another dose. (From Volume 19)
**Emergency Formula (*Beiji Fang*) for Treating the Three Worms:**
Arundo Rhizoma (*Lu*) [Four liang, roasted] Dried Resin of Toxicodendron (*Ganxi*) [Two liang, processed] Evodia Fruit (*Wuzhuyu*) [Four liang]
Make the three ingredients into powder. Following the previous method, chew dried meat first, then take one fangcunbi with rice gruel broth, once daily. (*Zhouhou Beiji Fang* and *Fan Wang Fang* are identical.)