【方歌】中脘疽由胃火生，脐上四寸隐隐疼，坚硬漫肿无红热，
不食呕哕毒内攻。
【注】此证一名胃疽。发于心胸之下，脐上四寸，任脉经中脘
穴。隐痛日久，向外生疽，坚硬漫肿，皮色无红无热，
由过食炙搏，以致胃腑火毒而成。人迎脉盛，是毒气攻
里，作呕不食，欬嗽脓痰者逆。初宜服仙方活命饮，色
紫坚硬，宜服山甲内消散。脓势将成，内外治法，俱按
痈疽肿疡、溃疡门。若起长脓迟，或疮不焮痛者，急用
艾壮隔独头蒜片，置患上炙之回阳。
方剂：山甲内消散
组成：穿山甲（炒，三大片） 当归尾
大黄 甘草节（各三钱）
土木鳖（三个） 黑牵牛
僵蚕（炒，各一钱）
酒、水各一钟，煎八分，空心服，渣再煎服。大便
行三、四次，方食稀粥淡味调理。
【方歌】山甲内消火毒结，色紫坚疼中脘疽，归尾大黄僵草节，
木鳖牵牛加酒宜。
又方：仙方活命饮（见肿疡门）
【方歌】吓痈七情郁火成，脐上三寸粟微红，暴肿焮痛二七溃，
顶陷色黑溃迟凶。
【注】此证由七情郁火凝结而成。生脐上三寸，属任脉经建里
穴。初如粟米，痒痛相兼，其肿迅速，寒热往来，甚则
呕哕，牵引脐痛。初肿微红，顶尖根束，渐透赤色，时
痛时止，十四日溃脓者顺；若顶陷紫黑，根脚漫肿，面
赤大渴，脉见浮数而散大者逆。内治与幽痈参考，外治
法按痈疽肿疡、溃疡门。
【方歌】中脘疽由胃火生，脐上四寸隐隐疼，坚硬漫肿无红热，不食呕哕毒内攻。
【注】此证一名胃疽。发于心胸之下，脐上四寸，任脉经中脘穴。隐痛日久，向外生疽，坚硬漫肿，皮色无红无热，由过食炙搏，以致胃腑火毒而成。人迎脉盛，是毒气攻里，作呕不食，欬嗽脓痰者逆。初宜服仙方活命饮，色紫坚硬，宜服山甲内消散。脓势将成，内外治法，俱按痈疽肿疡、溃疡门。若起长脓迟，或疮不焮痛者，急用艾壮隔独头蒜片，置患上炙之回阳。
方剂：山甲内消散
组成：穿山甲（炒，三大片） 当归尾 大黄 甘草节（各三钱） 土木鳖（三个） 黑牵牛 僵蚕（炒，各一钱）
酒、水各一钟，煎八分，空心服，渣再煎服。大便行三、四次，方食稀粥淡味调理。
【方歌】山甲内消火毒结，色紫坚疼中脘疽，归尾大黄僵草节，木鳖牵牛加酒宜。
又方：仙方活命饮（见肿疡门）
【方歌】吓痈七情郁火成，脐上三寸粟微红，暴肿焮痛二七溃，顶陷色黑溃迟凶。
【注】此证由七情郁火凝结而成。生脐上三寸，属任脉经建里穴。初如粟米，痒痛相兼，其肿迅速，寒热往来，甚则呕哕，牵引脐痛。初肿微红，顶尖根束，渐透赤色，时痛时止，十四日溃脓者顺；若顶陷紫黑，根脚漫肿，面赤大渴，脉见浮数而散大者逆。内治与幽痈参考，外治法按痈疽肿疡、溃疡门。
[Prescription Verse] Zhongwan Ju (Abscess at the Zhongwan Point) arises from Stomach Fire, with a dull pain four cun above the umbilicus; it is hard and diffusely swollen without redness or heat, accompanied by loss of appetite, vomiting, retching, and internal attack by toxin.
[Annotation] This condition is also known as Wei Ju (Stomach Abscess). It develops below the heart and chest, four cun above the umbilicus, on the Ren Mai (Conception Vessel) at the Zhongwan point (CV12). After a long duration of dull pain, an abscess forms outwardly; it is hard and diffusely swollen, with skin color showing no redness or heat. It results from excessive consumption of roasted and fried foods, leading to the formation of fire-toxin in the Stomach organ. A full pulse at the Yingchang point (ST9) indicates that the toxin is attacking inward; vomiting, inability to eat, coughing up purulent sputum are adverse signs. Initially, Xian Fang Huo Ming Yin (Immortal Life-Protecting Decoction) should be taken. If the color is purple and hard, Shan Jia Nei Xiao San (Pangolin Internal Dissipation Powder) should be taken. When pus is about to form, both internal and external treatments follow the guidelines for Tumors and Ulcers sections. If pus formation is delayed, or if the sore does not burn or hurt, urgently apply moxa cones separated by slices of single-clove garlic onto the affected area to warm and restore Yang.
Prescription: Shan Jia Nei Xiao San (Pangolin Internal Dissipation Powder)
Composition: Pangolin scales (stir-fried, three large pieces), Angelica sinensis tail (Dangguiwei), Rhubarb (Dahuang), Licorice root tips (Gancao jie) (each 3 qian), Earthy Momordica seed (Tumubie), Black Morning Glory seed (Hei Qianniu), Silkworm (Jiangcan) (stir-fried, each 1 qian).
Decoct one zhong of rice wine and one zhong of water until eight parts remain. Take on an empty stomach; decoct the dregs again and take them. Once bowel movements occur three to four times, then consume thin porridge and bland food for conditioning.
[Prescription Verse] Shan Jia Nei Xiao dissipates fire-toxin knots; for Zhongwan Ju with purple color, hardness, and pain, use Dangguiwei, Dahuang, Jiangcan, and Gancao jie, suitable with Mumie, Qianniu, and wine.
Another Prescription: Xian Fang Huo Ming Yin (see section on Tumors)
[Prescription Verse] Xia Yong (Fright Abscess) is formed by constrained fire due to Seven Emotions; at three cun above the umbilicus, it appears slightly red like millet grains; sudden swelling, burning pain, and ulceration within fourteen days; sunken apex, black color, and delayed ulceration are ominous.
[Annotation] This condition is formed by constrained fire coagulating due to the Seven Emotions. It arises three cun above the umbilicus, belonging to the Ren Mai (Conception Vessel) at the Jianli point (CV11). Initially, it resembles a millet grain, with simultaneous itching and pain; the swelling spreads rapidly, accompanied by alternating chills and fever, and in severe cases, vomiting, retching, and pulling pain around the umbilicus. The initial swelling is slightly red, with a pointed apex and constricted base; gradually turning reddish, with intermittent pain and cessation. Ulceration with pus discharge after fourteen days is favorable. If the apex is sunken and purple-black, the base is diffusely swollen, the face is red with intense thirst, and the pulse is floating, rapid, and scattered/large, these are adverse signs. Internal treatment refers to You Yong (Deep Abscess); external treatment follows the guidelines for Tumors and Ulcers sections.