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[Verse] Kidney abscess (Shen Yong) arises from deficiency of the Kidney Meridian; slight swelling and dull pain occur at Jingmen (Jingmen, GB25); distension and fullness in the lower abdomen and hypochondrium result from excessive sexual activity leading to physical coldness, allowing external pathogens to invade.

[Commentary] This condition originates at Jingmen (Jingmen, GB25), characterized by dull pain and slight swelling, causing alternating chills and fever, a pale complexion, and no thirst. There is distension and fullness in the lower abdomen and between the ribs. It is caused by individuals with Kidney deficiency who engage in excessive sexual activity, suffer from cold exposure, and allow pathogenic factors to invade from the exterior. Initially, Wuji San (Five Accumulations Powder) with added Xixin (Asari Radix et Rhizoma) should be administered. Once the cold has dissipated and pain ceases, Guifu Dihuang Wan (Cinnamon Twig and Aconite Pill for the Kidney) should be used for regulation.

Jingmen (Jingmen, GB25), also known as the Front-Mu point of the Kidney (Shen Mu), is located on the side of the body in the waist, below the iliac bone (jian gu) in the intercostal space.

Formula: Wuji San (Five Accumulations Powder)
Composition: Cangzhu (Atractylodis Rhizoma, stir-fried, 2 qian), Chenpi (Citri Reticulatae Pericarpium), Jiegeng (Platycodonis Radix), Chuanxiong (Ligustici Chuanxiong Rhizoma), Danggui (Angelicae Sinensis Radix), Baishao (Paeoniae Radix Alba, 1 qian each), Mahuang (Ephedrae Herba), Zhike (Aurantii Fructus Immaturus, bran-fried), Guixin (Cinnamomi Cortex), Ganjiang (Zingiberis Rhizoma), Houpo (Magnoliae Officinalis Cortex, 8 fen each), Baizhi (Angelicae Dahuricae Radix), Banxia (Pinelliae Rhizoma, processed), Gancao (Glycyrrhizae Radix et Rhizoma, raw), Fuling (Poria, 4 fen each).
Decoction method: Add one slice of fresh ginger, two zhong of water, decoct until eight fen remains. Take at any time.
Modification: If accompanied by headache and aversion to cold, add three scallion heads. Cover the patient and induce sweating for significant effect.

[Verse] Wuji San (Five Accumulations Powder) consists of Cangzhu, Zhike, Chenpi, and Fuling, along with Mahuang, Banxia, Jiegeng, Danggui, Baishao, and Chuanxiong, plus Baizhi, Houpo, Guixin, Ganjiang, and Gancao; it achieves success in treating kidney abscess caused by cold pathogens.
Another Formula: Guifu Dihuang Tang (Cinnamon Twig and Aconite Decoction for the Kidney) (See Chapter on Ulcers).

[Verse] Sanjiao abscess (Sanjiao Yong) is formed by the coagulation of damp-heat; swelling and dull pain appear at Shimen (Shimen, CV5). Cold coagulation is treated using the same method as intestinal abscess; internal abscesses all arise within the membranes.

[Commentary] This condition originates at Shimen (Shimen, CV5), characterized by dull pain and slight swelling, causing alternating chills and fever, and constipation with difficult urination and defecation. It is formed by the coagulation of damp-heat encountering cold. The treatment method is the same as that for Large Intestine Abscess and Small Intestine Abscess. All internal abscesses are lesions formed within the membranes, without ulceration or necrosis of the external skin.

Shimen (Shimen, CV5), also known as the Front-Mu point of the Sanjiao (Sanjiao Mu), is located two cun below the umbilicus.

Attribute: There are eleven Front-Mu points in the chest and abdomen of humans. Mu points are the sites where the Qi of the Zang-Fu organs converges in the Yin aspect. The *Ling Shu* states: In cases of internal abscess (Nei Yong) and internal gangrene (Nei Ju), the flesh at the Front-Mu point of the affected meridian must swell, and there must be intermittent dull pain at the Mu point. Swelling indicates abscess, while dull pain indicates gangrene. This is the verification of internal abscess and internal gangrene. Here, internal abscess has treatment methods, but internal gangrene does not. Why? Essentially, the pathology of internal abscess and internal gangrene is identical; the difference lies only in the depth of the root. Shallow root constitutes abscess, deep root constitutes gangrene. If, during clinical practice, the use of attacking and tonifying methods is appropriate, efficacy will invariably be achieved. As for the eleven Mu points, why are there only nine types of internal abscess? The Gallbladder resembles a membrane, having no entry or exit, containing clear bile and pure Qi, thus it does not generate internal abscess or internal gangrene. The Bladder is also like a membrane, containing only turbid water; therefore, ancient and modern texts do not discuss internal abscess or internal gangrene regarding it, so I dare not record them in detail. Although Zhongji (Zhongji, CV3) is the Front-Mu point of the Bladder, nowadays when patients present with swelling or dull pain at Zhongji, the symptoms manifest identically to Small Intestine Abscess, and the treatment should follow the method for Small Intestine Abscess. Let future scholars pay attention to this.