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Jinye Wutu Dan (see section on Gangrene of the Extremities).

The term "Liuzhu" (Flowing Abscess) consists of two characters: "Liu" (Flow) means movement, indicating that when Qi and Blood are vigorous, there should be no stagnation; "Zhu" (Stationary) means staying, indicating that due to the decline of Qi and Blood, stagnation occurs. Therefore, normal flow arises from natural conditions, while stagnation arises from blood stasis and obstruction. The manifestation is a diffuse swelling without a head, with unchanged skin color, and it can occur anywhere, regardless of acupoints. Those who contract this disease are mostly individuals with weak constitutions or those engaged in hard labor, who fail to care for themselves properly. They may sleep outdoors in summer and autumn, indulge in seeking coolness, expose their hot bodies to wind for comfort, or suffer from incomplete dispersion of wind-cold pathogenic factors. Alternatively, they may experience Yin deficiency after sexual intercourse, allowing external cold to invade. Anger may injure the Liver, and emotional constraint may damage the Spleen, causing Ying Qi (Nutritive Qi) to become disordered and reverse into the muscles. Traumatic injuries may cause blood stasis and stagnation, or postpartum lochia may not have been fully discharged, flowing into and obstructing the meridians. All these various causes lead to this disease. Once established, treatment must differentiate between exterior/interior, cold/heat, deficiency/excess, pathogenic factor/righteous Qi, and acute/chronic stages. For initial cases where wind-cold has invaded and exterior symptoms remain undispersed, Renshen Baidu San (Ginseng Detoxification Powder) is used to disperse them. After sexual activity, when weakness allows external cold to invade, Wuji San (Five Accumulations Powder) with Fuzi (Prepared Aconite Root) is used to warm them. For cases caused by overwork, depression, anger, and excessive thinking damaging the Spleen, Guipi Tang (Restore the Spleen Decoction) with Xiangfu (Cyperus Rhizome) and Qingpi (Aurantium Peel) is used to dissipate them. For traumatic injuries causing blood stasis, Fuyuan Huoxue Tang (Restore Vitality and Invigorate Blood Decoction) is used to drive out the stasis. For postpartum lochia obstructing the meridians, Muxiang Liqi Yin (Costus Qi-Regulating Infusion) is used to guide and drain it. These are methods for the early stage before full formation; one to four doses are sufficient. Externally, Hupo Gao (Amber Plaster) is applied, which can resolve about 50-60% of cases. If internal resolution fails with the above prescriptions, the method requires substantial tonification of Qi and Blood, strengthening the Spleen and Stomach, warming the meridians, and unblocking the joints. Muxiang Liqi Yin and Shiquan Dabu Tang (Perfect Ten Tonifying Decoction) are both modified with Shu Fuzi (Prepared Aconite Root) and Xiangfu to strengthen the root. In this manner, unformed abscesses will dissipate, formed ones will suppurate, and ruptured ones will heal, avoiding persistent non-healing ulcers. If pus has formed, it should be incised promptly. Patients must also regulate their daily life, restrain the Seven Emotions, avoid cold and seek warmth, which ensures preservation of health. However, many cases become incurable due to the mistaken use of cold-cooling, purgative, or internal-resolving drugs.