《灵枢》曰∶发于胫，名曰兔啮。其状如赤豆至骨，急治之，不急治害人也。
或间∶足小肚内侧，微红微肿，坚硬如石三四寸许，痛楚难禁，何如？曰∶此名黄
鳅痈。属足太阴与足厥阴二经湿热，又积愤所致。宜服五香汤、流气饮，加牛膝、木瓜、
防己、黄柏。壮实者，一粒金丹下之，或万病解毒丹。不足者，十全大补汤加牛膝、木
瓜。若过时溃出清水，虚火上升，呕吐不食者不治。
《鬼遗》云∶三里两处起痈疽，初发如牛眼睛青黑，便五七日破穴，出黑血汁，脓肿
攻膀肚连腿里，拘急冷疼，此因伤筋气劳力所成。宜用汤药注射其外，毒自平息矣。
《鬼遗》云∶两脚接骨，近上膀肚下一处，起丹疽，如胡桃大，硬如物打磕之状，不苦
疼，但肿急胀，虑其损筋，亦须早出脓毒，可保平安也。
《鬼遗》云∶垂珠左右两处起痈为骗马坠。初起大小不定，此处微实皮肉薄，纹紧，口
亦难合。疮初起，宜以消散药贴令内消，此处亦易成漏疮。唯宜消散之，硬即恐缓慢难
为功矣。又云∶交HT 一处，近棱在线亦为骗马坠，防漏，（俗名跨马痈是也。）
或问∶足肚之下结块，长二三寸许，寒热大作，饮食不进何如？日；此名青蛇便。属
足少阴与足太阳经，由肾经虚损，湿热下注所致。头向上者难治。头向下者刺出恶血，服
活命饮加木瓜、牛膝、黄柏，或乌金散、紫金丹选用。老弱之人，呕吐腹胀，神昏脉躁
者死。
青蛇便生小膀上下，头生望上攻，走入腹者，不可治。头生向下，尾在上即为顺可
治也。急服二十六味托里散；外用神方铁箍散，姜汁、陈醋、猪胆同调敷之。上望下赶，
蛇头上用三棱针，针入二寸出黑紫血，出针急下保生散，用纸捻蘸药送入。
《灵枢》说：发于小腿部位的，名叫兔啮。其症状像赤豆一样深入至骨，必须紧急治疗，若不急治会危害人的生命。
有人问：足部小腿内侧，微微发红肿胀，坚硬如石头般大小约三四寸，疼痛剧烈难以忍受，这是什么情况？回答说：这名叫黄鳅痈。属于足太阴脾经与足厥阴肝二经的湿热之邪，加上积郁愤怒所致。适宜服用五香汤、流气饮，加入牛膝、木瓜、防己、黄柏。体质壮实者，用一粒金丹攻下排毒，或者使用万病解毒丹。体质虚弱者，用十全大补汤加入牛膝、木瓜。如果过时溃破流出清水，虚火上升，出现呕吐不能进食的情况，则属不治之症。
《鬼遗科》说：在足三里穴两处发生痈疽，初起时像牛眼睛一样青黑色，大约五六七天后破溃，流出黑血脓汁，脓肿攻冲膀胱腹部并牵连腿部内部，导致拘挛急迫、冷痛，这是由于损伤筋气、过度劳累所造成。适宜用汤药外敷注射（注：此处指外用药物处理），毒邪自然平息。
《鬼遗科》说：在两脚踝关节上方，靠近小腿肚下方一处，发生丹疽，大小如胡桃，坚硬如同被物体撞击磕碰后的样子，不感到剧烈疼痛，只是肿胀急迫胀满，担心损伤筋脉，也必须尽早排出脓毒，才可以保全平安。
《鬼遗科》说：在阴囊垂珠左右两处发生痈肿，称为骗马坠。初起时大小不定，此处皮肤肌肉较薄且坚实，纹理紧绷，疮口也难以愈合。疮初起时，适宜用消散类药物贴敷使其内消，此处也容易形成漏疮（瘘管）。唯有适宜使用消散之法，若变硬恐怕就进展缓慢难以奏效了。又说：在会阴穴一处，靠近棱线在线部位也称为骗马坠，需防止形成漏疮，（俗名跨马痈就是这种病）。
有人问：足部小腿肚下方结块，长约二三寸左右，寒热症状严重发作，饮食不进，这是什么情况？回答说：这名叫青蛇便。属于足少阴肾经与足太阳膀胱经，由肾经虚损，湿热下注所致。头朝上生长的难治。头朝下的，针刺放出恶血，服用活命饮加入木瓜、牛膝、黄柏，或者选用乌金散、紫金丹。年老体弱之人，出现呕吐腹胀、神志昏迷、脉搏躁动急促的，预后不良致死。
青蛇便生在小腿上下，头部向上生长望上攻入腹部的，不可治愈。头部向下生长，尾部在上的即为顺证，可以治愈。紧急服用二十六味托里散；外用神方铁箍散，用姜汁、陈醋、猪胆汁调和后敷贴。治疗原则是“上望下赶”（即引导毒势向下），在蛇头部位用三棱针，针刺入二寸深放出黑紫色血液，出针后立即服用保生散，用纸捻蘸取药液送入体内（或指将药引送服）。
The *Ling Shu* states: When a carbuncle occurs on the lower leg, it is named "Rabbit Bite" (Tubi). Its appearance resembles a red bean extending deep to the bone; it must be treated urgently. If not treated promptly, it will endanger life.
A question was raised: On the medial side of the calf, there is slight redness and swelling, hardness like stone for about three or four cun, with unbearable pain. What is this? The answer is: This is named "Yellow Loach Abscess" (Huangqiu Yong). It belongs to damp-heat in the Foot-Taiyin Spleen and Foot-Jueyin Liver meridians, caused by accumulated resentment and anger. It is suitable to take Wuxiang Tang (Five Fragrances Decoction) or Liqi Yin (Flowing Qi Drink), added with Xuexi (Radix Achyranthis Bidentatae), Mugua (Fructus Chaenomelis), Fangji (Radix Stephaniae Tetrandrae), and Huangbai (Cortex Phellodendri). For those with strong constitutions, Yili Jindan (One Pill Golden Elixir) can be used to purge toxins, or Wanbing Jiedu Dan (Ten Thousand Diseases Detoxifying Pill). For those with deficient constitutions, Shiquan Dabu Tang (Decoction for Complete Great Tonification) added with Xuexi and Mugua is appropriate. If it ulcerates late and discharges clear fluid, with rising deficiency fire, vomiting, and inability to eat, it is incurable.
The *Gui Yi Ke* states: When carbuncles and sores arise at both sides of the Zusanli point, initially appearing dark green-black like an ox's eye, they break open after five to seven days, discharging black bloody pus. The abscess attacks the bladder and abdomen, extending into the legs, causing spasms, cold pain, and stiffness. This is formed due to injury to the sinews and qi from labor and overexertion. It is suitable to apply herbal decoctions externally to inject or wash the area, allowing the toxin to subside naturally.
The *Gui Yi Ke* states: At one location near the upper part of the calf, below the ankle joint on both feet, a Dan Ju (erysipelas-like sore) arises, the size of a walnut, hard as if beaten by an object. It does not cause severe pain but presents with urgent swelling and distension. One should worry about damage to the sinews; it is necessary to discharge the pus and toxin early to ensure safety.
The *Gui Yi Ke* states: When sores arise at the left and right sides of the scrotal pendulum, it is called "Pian Ma Zhui" (Deceiving Horse Fall). Initially, the size varies. The skin here is thin yet firm, with tight texture, and the wound mouth is difficult to close. At the initial stage, it is suitable to apply dissipating medicines topically to resolve it internally. This location is also prone to forming fistulas. Only dissipating methods are suitable; if it becomes hard, progress may be slow and ineffective. It further states: At the Huiyin point, near the perineal raphe, it is also called Pian Ma Zhui. Prevention of fistula formation is required (commonly known as Cross-Horse Carbuncle).
A question was asked: A mass forms below the calf, about two or three cun long, accompanied by severe chills and fever, and loss of appetite. What is this? The answer is: This is named "Green Snake Urination" (Qingshe Bian). It belongs to the Foot-Shaoyin Kidney and Foot-Taiyang Bladder meridians, caused by Kidney meridian deficiency and downward pouring of damp-heat. Those with the head pointing upward are difficult to treat. Those with the head pointing downward should have pricked to release foul blood, followed by taking Huoming Yin (Life-Saving Drink) added with Mugua, Xuexi, and Huangbai, or alternatively selecting Wu Jin San (Black Gold Powder) or Zi Jin Dan (Purple Gold Pill). For elderly and weak individuals presenting with vomiting, abdominal distension, confusion, and rapid/irregular pulse, the prognosis is fatal.
When Qingshe Bian arises above or below the calf, if the head grows upward attacking into the abdomen, it is incurable. If the head grows downward and the tail is upward, it is considered a favorable progression and is treatable. Urgently take Ershiliu Wei Tuoli San (Twenty-Six Ingredient Interior-Supporting Powder); externally apply Shenfang Tiegu San (Divine Formula Iron-Fence Powder) mixed with ginger juice, aged vinegar, and pig bile. The treatment principle is "directing upwards towards downwards" (guiding the toxin downward). Use a three-edged needle on the snake's head, inserting two cun deep to discharge black-purple blood. After removing the needle, immediately administer Bao Sheng San (Life-Preserving Powder), using a paper twist dipped in medicine to guide the intake.