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Huangdi asked: When a person suffers from a carbuncle in the stomach region (Wei Wan Yong), how should the diagnosis be conducted? Qibo replied: In diagnosing this condition, one should observe the Stomach pulse. The pulse should be deep and fine (Chen Xi). A deep and fine pulse indicates rebellious Qi (Qi Ni) [Note: *Jia Yi Jing* reads "deep and choppy" (Chen Se)]. Rebellious Qi causes the Renying pulse to be extremely full. An extremely full Renying pulse indicates heat. The Renying pulse belongs to the Stomach channel. When Qi is rebellious and the pulse is full, heat gathers in the Stomach and fails to circulate, thus forming a carbuncle in the stomach region. (From *Su Wen*, Chapter "Bing Neng")

Xue Ji commented: *Sheng Ji Zong Lu* states that a carbuncle in the stomach region arises from cold qi obstructing Yang qi, causing heat to gather at the stomach opening. The disharmony of cold and heat leads to the corruption and necrosis of flesh and blood. Because Qi rebels in the Stomach, the Stomach pulse appears deep and fine. Because Yang Qi fails to ascend, the Renying pulse becomes hot and full, causing symptoms such as alternating chills and fever resembling malaria, rough and scaly skin (Pi Jia Cuo), cough, or vomiting of pus and blood. If the pulse is surging and rapid (Hong Shu), it indicates that pus has formed; immediate drainage is required. If the pulse is slow and tight (Chi Jin), it indicates blood stasis; immediate purgation is required. Otherwise, the pathogenic toxin will attack internally, corroding the intestines and stomach. Mr. Danxi stated that internal abscesses (Nei Ju) arise from the toxicity of diet and the fire of the seven emotions, which become stagnant and erupt. They are treated primarily with Shegan Tang. I often select Yiyiren Tang, Mudanpi San, or Taiyi Gao for use, which are also effective. If there is vomiting of pus and blood, along with poor appetite and lack of desire for food, the treatment should focus on supporting the Stomach and strengthening Qi, assisted by the aforementioned methods, rather than treating the sore exclusively. One male patient presented with alternating chills and fever, thirst, intermittent coughing and expectoration, a metallic taste in the mouth, and five days later vomited pus, with rough and scaly skin. I administered Shegan Tang for four doses; the vomiting of pus and blood ceased, but Qi stagnation and excessive phlegm remained. He was cured using Ganjie Tang. Another male patient was nearly cured using Shegan Tang and similar formulas, but presented with asthma, fatigue, fever, thirst, and frequent urination. This indicated deficiency of Lung Qi. I used Buzhong Yiqi Tang supplemented with Shanyao, Shanzhuyu, Maimendong, and Wuweizi. It was mid-summer, so I also prescribed Shengmai San to be taken as tea, resulting in a cure. One female patient, accustomed to rich and greasy foods, had her vomiting of pus cured, but continued to experience dribbling urination. This indicated deficiency of Lung and Kidney Qi. I used Buzhong Yiqi Tang supplemented with Maimendong and Wuweizi, along with Jiajian Bawei Wan, resulting in a cure. For individuals consuming refined and fatty foods, Qingwei San should be used at the initial stage.

Shegan Tang treats carbuncles in the stomach region, characterized by a rebellious and full Renying pulse, coughing up pus and blood, impaired circulation of Ying and Wei, and heat gathering at the stomach opening to form a carbuncle.
Ingredients: Shegan (descaled), Zhiren, Chifuling (peeled), Shengma (each 1 liang), Chishao Yao (1.5 liang), Baizhu (0.5 liang).
Preparation and Administration: Grind the above ingredients into powder. Take 5 qian per dose, add 2 zhan of water, decoct until 1 zhan remains, strain, add 1 he of Rehmanniae Radix juice (Dihuang Zhi) and 0.5 he of honey, decoct again, and take warm. Administer at any time.

Fuyuan Tongqi San (from *Waike Jingyao*) treats various Qi obstructions, deafness, abdominal carbuncles, anal/perineal carbuncles, headless sores and ulcers, relieving pain and reducing swelling.
Ingredients: Qingpi, Chenpi (each 4 liang), Gancao (3 cun, half raw and half processed), Chuanshanjia (prepared), Gualugen (each 2 liang), Jinyinhua, Lianqiao (each 1 liang).
Preparation and Administration: Grind into fine powder. Mix with hot wine and take orally.

Shaoyao Tang treats accumulated heat in the stomach region that condenses to form a carbuncle.
Ingredients: Chishao Yao, Shigao, Xijiao (sliced), Maimendong, Qicai, Mutong (each 2 liang), Puxiao, Shengma, Xuanshen, Gancao (raw, each 1 liang).
Preparation and Administration: Coarsely crush the ingredients. Take 5 qian per dose, add 1.5 zhan of water, decoct until 0.8 zhan remains, strain, and take warm at any time.