Furuncles occurring at the knees are located above both knees and belong to the Foot-Shaoyang Gallbladder Meridian. They resemble human-faced sores, possessing a cavity-like structure as well as mouth and eye shapes, which is quite terrifying. This condition arises from the downward flow of stagnant heat from the Heart and Liver meridians into the hips and knees, thereby generating this toxic pathogen. It is advisable to use Baidu Liuqi Yin (Detoxifying Qi-Regulating Decoction) for treatment, followed by agents that drain pus and generate flesh. If it remains unhealed after seven or eight years, it may lead to lameness and even endanger life, with severe consequences.

Nineteen-Ingredient Detoxifying Qi-Regulating Decoction (Shijiuwei Baidu Liuqi Yin)
Phellodendri Cortex (Huangbai, salt-fried), Spatholobi Caulis (Fangji), Achyranthis Bidentatae Radix (Chuanxini, wine-fried), Chaenomelis Fructus (Mugua), Perillae Folium (Zisu), Aucklandiae Radix (Muxiang), Atractylodis Macrocephalae Rhizoma (Baizhu), Lonicerae Japonicae Flos & Forsythiae Fructus (Erhua), Coptidis Rhizoma (Huanglian), Ophiopogonis Tuber (Maidong), Peucedani Radix (Qianhu), Arecae Semen (Binglang), Arctii Fructus (Niuzi), Arecae Pericarpium (Dafupi), Glycyrrhizae Radix et Rhizoma (Gancao), Paeoniae Radix Rubra (Chishao), Polygoni Multiflori Radix (Shouwu), Aconiti Lateralis Radix Preparata (Chuanwu, processed), Lycii Cortex (Digupi).
Take on an empty stomach.

Eleven-Ingredient Fangfeng Niuxi Decoction (Shiyiwei Fangfeng Niuxi Tang)
Achyranthis Bidentatae Radix (Chuanxini), Chaenomelis Fructus (Mugua), Arecae Semen (Binglang), Aucklandiae Radix (Muxiang), Boswelliae Resina (Ruxiang), Saposhnikoviae Radix (Fangfeng), Coptidis Rhizoma (Huanglian), Glycyrrhizae Radix et Rhizoma (Gancao), Angelicae Dahuricae Radix (Huafen), Atractylodis Macrocephalae Rhizoma (Baizhu), Ginseng Radix et Rhizoma (Renshen).
Take on an empty stomach. This formula is particularly effective when used externally to wash the sore.

Two-Ingredient Topical Application Formula
Grind Fritillariae Bulbus (Beimu) into powder, mix with water prepared from grinding Arecae Semen (Binglang), apply to the affected area, and cover with Wanling Gao (Ten-Thousand Spirit Plaster) and Shengji San (Flesh-Generating Powder); this is effective.

External Formula
For treating Crane-Knee Wind (He Xifeng, characterized by knee swelling resembling a crane's knee).
Cook glutinous rice into a meal, combine with wine and yeast (three ingredients), pound them together, and apply to the painful area; it will heal in three days.

Another Formula for Opposite-Sore (Duikou Chuang)
Pound Jian Dao Cai (Ixeris dentata) and mix with raw distiller’s grains; apply to the site. Replace when dry, and it will heal.

Twelve Types of Facial Furuncles Depicted in Figures (Part 1)
1. Temporal Furuncle (Bin Fa) 2. Eyebrow Furuncle (Mei Fa) 3. Ear Furuncle (Er Fa) 4. Jaw Furuncle (Yi Fa) 5. Beard Furuncle (Xu Fa) 6. Shoulder Furuncle (Jian Fa) 7. Breast Furuncle (Ru Fa) 8. Chest Furuncle (Xiong Fa)
9. Dorsal Hand Furuncle (Shoubai Fa) 10. Urinary Toxin (Xiaobian Du / Bian Fa, occurring on the glans penis) 11. Dorsal Foot Furuncle (Jiaobei Fa) 12. Heel Furuncle (Genjiao Fa)

Temporal furuncles (Bin Fa) occur between the two temples. They are common in children and women, but if they occur in men, they are often incurable. This condition is governed by the Hand-Shaoyang, Foot-Shaoyang, and Hand-Taiyin meridians. It arises because of accumulated heat in the Heart and Liver, combined with wind invasion of the head and forehead, thus generating this toxic pathogen. One should clear the heat from these two meridians using Shiyiwei Chaihu Shengma Tang (Eleven-Ingredient Bupleurum and Cimicifuga Decoction).

Eleven-Ingredient Bupleurum and Cimicifuga Decoction (Shiyiwei Chaihu Shengma Tang)
[Herb name "Ben" - likely referring to a root herb such as Dictamni Radix or similar contextually], Saposhnikoviae Radix (Qianghuo), Cimicifugae Rhizoma (Shengma), Puerariae Lobatae Radix (Gange), Saposhnikoviae Radix (Fangfeng), Coptidis Rhizoma (Huanglian), Paeoniae Radix Rubra (Chishao), Rehmanniae Radix Preparata (Shengdi), Ophiopogonis Tuber (Maidong), Angelicae Sinensis Radix (Danggui), Taraxaci Herba (Pugongying, washed twice with wine).
Take on an empty stomach.

Eight-Ingredient Divine White Angelica Powder (Bawei Shenfang Baizhi San)
Angelicae Dahuricae Radix (Baizhi), Cimicifugae Rhizoma (Shengma), Lonicerae Japonicae Flos & Forsythiae Fructus (Erhua), Platycodonis Radix (Jiegen), Ligustici Chuanxiong Rhizoma (Chuanxiong), Forsythiae Fructus (Lianqiao), Coptidis Rhizoma (Huanglian), Saposhnikoviae Radix (Qianghuo).
Take after meals.

Seven-Ingredient Topical Application Formula
Realgar (Xionghuang), Myrobalan (Ercha), Sepiae Endoconcha (Piaoxiao), Boswelliae Resina (Ruxiang), Myrrha (Moyao), Moschus (Shexiang), Bovis Calculus (Niuhuang).
Grind all into powder, mix with wine, and apply topically.