\r手背发\p04-a55a32.bmp\r
此疮发于手背中渚液门二穴。系手少阳经。多气少血。初起时令人憎寒发热。或作呕及作痒痛。
有五善七恶。内详照篇论治之。
\r足背发\p04-a55a33.bmp\r
此疮发于足背。衡阳陷谷二穴。乃足阳明胃经。多血多气。初发时令人发热作呕。痛痒麻木。俱
照前篇中可灸之可托之。以平为善也。
\r肾阴发\p04-a55a34.bmp\r
此疮发于肾囊。一名悬痈。又名囊痈。乃冲任脉所会之处。发者言大也比痈更大也。况胞乃空囊
之处。气血凝聚。能作肿大也。亦有胞腐了止存睾丸亦不死。亦有俱腐落而不死者也。
\r对脐发\p04-a55a35.bmp\r
此疮发于背下命门穴。与脐相对。故名之。是督脉之经。毒发也痛甚者可刺黄白稠脓者生。出血
水及清稀水。心神恍惚。睡中见鬼谵语。大发渴者死。善于调摄。勿犯禁忌者亦可得生。
\r癌发\p04-a55a36.bmp\r
此疮发于神道灵台二穴。乃督脉兼膀胱经。多血少气。初起时不作寒热疼痛。紫黑色不破。里面
先自黑烂。二十岁以后。不慎房事。积热所生。四十岁以上血亏气衰。浓味过多。所生十全一二。皮
黑者难治必死。
手背发
这种疮疡发生在于手背部的中渚穴和液门穴。归属于手少阳三焦经。该经脉多气而少血。初起时使人憎恶寒冷并伴有发热，或者出现呕吐以及瘙痒疼痛的症状。
病情发展有“五善”和“七恶”两种预后判断标准。内部详细情况参照相关篇章进行论治。
足背发
这种疮疡发生在足背部，位于衡阳穴和陷谷穴。属于足阳明胃经。该经脉多血又多气。初发时使人发热并伴有呕吐，出现疼痛、瘙痒或麻木感。全部按照前篇所述，可采取艾灸或托毒排脓的方法治疗，以病情平稳为良好预后。
肾阴发
这种疮疡发生在肾囊（阴囊）。一名叫做悬痈。又叫做囊痈。是冲脉和任脉交汇的地方。所谓“发”，是指肿块较大，比一般的痈肿还要大。况且胞宫（此处指代阴囊部位）本是空虚的囊袋之处，气血凝聚于此，能够造成肿大。也有即使胞囊腐烂殆尽，仅存留睾丸也能不死的情况；也有整个溃烂脱落而不死的案例。
对脐发
这种疮疡发生在背部下方的命门穴，与肚脐相对，因此得名。属于督脉经络。若毒邪发作，疼痛剧烈者，若能刺出黄白色稠厚脓液则生还；若流出血液、水样液体及清稀的水液，且伴有心神恍惚、睡梦中胡言乱语见鬼、大发口渴等症状者则死亡。善于调养摄护，不触犯禁忌的人也可以获得生机。
癌发
这种疮疡发生在神道穴和灵台穴。属于督脉兼属膀胱经。该处多血少气。初起时没有寒热和疼痛症状，皮肤呈紫黑色且不破溃，内部先自行黑烂。二十岁以后，因不慎房事，积热所生。四十岁以上，因血亏气衰，饮食浓味过多所致，十人中能痊愈一二。皮肤发黑的难以治疗，必然死亡。
Hand Back Carbuncle (Shoubai Fa)
This ulcer occurs at the Zhongzhu (TE5) and Yemen (TE2) acupoints on the back of the hand. It belongs to the Hand Shaoyang Sanjiao Meridian (Triple Burner), which is characterized by abundant Qi and scarce Blood. In its early stage, it causes aversion to cold accompanied by fever, or may present with vomiting, itching, and pain.
The prognosis involves "Five Auspicious Signs" (Wu Shan) and "Seven Inauspicious Signs" (Qi E). Detailed treatment should be conducted according to the discussions in relevant chapters.
Foot Back Carbuncle (Zubei Fa)
This ulcer occurs on the dorsum of the foot, specifically at the Hengyang (ST43) and Xian Gu (ST41) acupoints. It belongs to the Foot Yangming Stomach Meridian, which is characterized by abundant Blood and abundant Qi. In its initial onset, it causes fever and vomiting, along with pain, itching, or numbness. Treatment should follow the previous chapter's guidelines, utilizing moxibustion or methods to support the body's resistance and expel toxins (Tuo Zhi). A stable condition indicates a favorable outcome.
Kidney Yin Carbuncle (Shenyin Fa)
This ulcer occurs in the scrotum. Also known as Xuan Yong (Hanging Abscess) or Nang Yong (Scrotal Abscess). It is located where the Chong Mai (Penetrating Vessel) and Ren Mai (Conception Vessel) intersect. The term "Fa" (Carbuncle/Eruption) implies that the swelling is large, even larger than a typical abscess. Furthermore, the scrotum is essentially a hollow sac; when Qi and Blood condense there, it can cause significant swelling. There are cases where even if the scrotal tissue rots away completely, leaving only the testicles, the patient may survive; there are also cases where total ulceration and shedding occur without death.
Opposite Umbilicus Carbuncle (Duiqi Fa)
This ulcer occurs at the Mingmen (GV4) acupoint on the lower back, opposite the umbilicus, hence the name. It belongs to the Du Mai (Governing Vessel). If the pathogenic toxin erupts causing severe pain, survival is possible if yellowish-white, thick pus is expressed upon incision. However, if blood-tinged fluid or clear, thin fluid drains out, accompanied by mental confusion, hallucinations (seeing ghosts) during sleep, delirious speech, and extreme thirst, death is likely. Patients who practice proper self-care and avoid taboos may still survive.
Ai Fa (Cancerous Eruption)
This ulcer occurs at the Shendao (GV11) and Lingtai (GV10) acupoints. It involves the Du Mai (Governing Vessel) and the Bladder Meridian. This area is characterized by abundant Blood and scarce Qi. In its early stage, there is no aversion to cold, fever, pain, or tenderness. The skin appears purple-black and does not rupture, while the internal tissue first undergoes necrosis and blackening. In individuals over twenty years old, this condition arises from improper sexual conduct leading to accumulated heat. In individuals over forty, it results from deficiency of Blood and decline of Qi, combined with excessive consumption of rich and heavy foods. Only one or two out of ten patients recover. Cases presenting with blackened skin are difficult to treat and invariably fatal.