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Qianghuo San (Notopterygium Decoction): Treats hand back carbuncle (carbuncle on the dorsum of the hand) and palm toxicity (carcinoma/boil on the palm).
Herbs: Qianghuo (Notopterygii Rhizoma et Radix), Duhuo (Angelicae Pubescentis Radix), Qianhu (Peucedani Radix), Jiegeng (Platycodonis Radix), Wuyao (Linderae Radix), Jingjie (Schizonepetae Herba), Danggui (Angelicae Sinensis Radix), Shengma (Cimicifugae Rhizoma), Bo Gui (Cinnamomi Cortex, thin variety), Weilingxian (Saposhnikoviae Radix), Gancao (Glycyrrhizae Radix et Rhizoma).
Usage: Decoct with one cup of water and one cup of wine until reduced to one cup. Take after meals.

Daizhi Gao (Finger-nail Ointment): Treats Daizhi (paronychia/infection around the fingernail).
Herbs: Xionghuang (Realgar), Puxiao (Mirabilite, equal parts).
Usage: Mix with pig bile and a small amount of sesame oil, then apply.

Lilu Gao (Veratrum Ointment): Treats sores with itching and pain, oozing yellow fluid.
Herbs: Lilu (Veratri Rhizoma), Kushen (Sophorae Flavescentis Radix) (each 1 liang), Zhuzhi (Pig Fat) (0.5 jin).
Usage: Soak for seven days, boil for more than ten times, remove dregs, add Songxiang (Pini Resina) 1 liang to melt. Remove from fire, add Xionghuang powder and Kufan (Alumen Exsiccatum) powder, each 1 liang. Stir well and apply. Continue until healed.

Er Fan San (Two Alum Powder): Treats E Zhang Feng (keratoderma of the hands), characterized withered and thick skin, cracking and pain. The stronger the effect, the better.
Herbs: Bai Fan (Alumen) (4 liang), Zao Fan (Melanteritum) (4 liang), Ercha (Catechu) (5 qian), Cebaiye (Platycladi Cacumen) (0.5 jin).
Usage: Decoct with ten bowls of water until boiling several times. First, apply tung oil to the affected area. Then, dip a paper twist in tung oil, light it, and fumigate the affected area for a while. Next, pour the decoction into a clean bucket while hot. Place the hand over the bucket, cover with cloth to fumigate, ensuring no steam escapes. When the liquid is slightly warm, pour it into a basin, soak and wash the affected area for a long time. One treatment can cure it. Avoid water contact for seven days.
Alternative method 1: Use menstrual cloth from women, rinse with boiling water, and fry/apply to the affected area. Effective.

Eryou Gao (Two Oil Ointment): Treats E Zhang Feng and blood wind sores.
Ingredients: Oil (base), Niuyou (Bovine Fat), Xiangyou (Sesame Oil) (each 1 liang), Huangla (Beeswax) (1 liang), Yinzhu (Vermilion), Qianfen (Lead White Powder) (2 qian), Muxiang (Moschus) (2 qian).
Usage: Make into an ointment, apply to the affected area, and bake with fire until the oil is dry.

Ganzhu Dan, Neishu Huanglian Tang, Yangsui Dingzi, Ligong Dingzi (all seen in the first volume), Chansu Wan, Bading San (all seen in the Ding section).

Thigh Region (The three yang meridians of the foot run on the outside and are called Bi; the three yin meridians of the foot run on the inside and are called Gu.)

Meridian Distribution: The anterior aspect is the Foot-Yangming Stomach Meridian, the posterior aspect is the Foot-Taiyang Bladder Meridian, the lateral aspect is the Foot-Shaoyang Gallbladder Meridian, the medial aspect is the Foot-Jueyin Liver Meridian, the anteromedial aspect is the Foot-Taiyin Spleen Meridian, and the posteromedial aspect is the Foot-Shaoyin Kidney Meridian.

Guyin Ju (Yin Abscess of the Thigh): Occurs on the inner side of the thigh near the scrotum. It is elongated, slightly red, and extremely painful. Knee flexion is difficult. If it spreads upward, it is easy to treat; if it spreads downward, it is difficult to treat. Moxibustion at Shangqiu (SP-5) for seven moxa cones, or at the end of the horizontal bone below the knee on the lateral side.

Yin Ju (Yin Abscess): Occurs three cun below the crease, on the left side. It presents as diffuse swelling, pain radiating to the genitals, extending up to the lower abdomen and down to the thigh. Moxibustion at Zhongdu (LR-6) for fourteen moxa cones.

Xuan Ju (Black Abscess): Occurs below the crease, on the right side. Moxibustion at Ligou (LR-5) for twenty-one moxa cones.

Futu (Rabbit Hiding Point): Occurs five to six cun below the groin, accompanied by chills and fever. Swelling without a head, pain penetrating the heart.

Dumen Yong (Abscess at the Belly Gate): Occurs in the belly of the thigh (gastrocnemius muscle).

Jimen Yong (Abscess at the Basket Gate): Occurs in the inner thigh near the knee.

Guyang Ju (Yang Abscess of the Thigh): Occurs on the lateral side of the thigh. *Ling Shu* states: Swelling does not change color, pressing internally against the bone.

Huantiao Ju (Abscess at Huantiao): Occurs at the Huantiao (GB-30) point. Diffuse swelling with hidden pain, Chi pulse is deep and tight, leg cannot extend.

Regarding the above symptoms: For early-stage redness, swelling, and pain, use Shenshou Weisheng San. For diffuse large swelling and severe pain, use Neituo Huangqi Tang. For pain with tendon spasm and wiry-tight pulse, use Ganzhu Dan to induce sweating. Once pain stops, switch to Shenyang Zhen Dan. For wandering pain throughout the body, with swelling on the dorsum of the foot after two days and lumps in the legs and thighs, with floating and slow pulse, caused by external invasion of cold pathogen, use Ganzhu Dan to induce sweating. Once pain stops, proceed to support the interior, doubling the dosage of Renshen (Ginseng Radix), Baizhu (Atractylodis Macrocephalae Rhizoma), Danggui (Angelicae Sinensis Radix), and Chuanxiong (Chuanxiong Rhizoma). For swelling with constipation, irritability, preference for cold drinks, and rapid pulse, caused by heat pathogen stagnating internally, use Neishu Huanglian Tang and Guijin Wan to purge. For swelling, pain, chills, fever, thirst, forceful and rapid洪 pulse, with normal appetite, caused by damp-heat stagnation in the Foot-Yangming meridians, use Bin Su Baidu San. Once swelling, pain, chills, and fever stop, switch to Xiaoyao San. For swelling with unchanged color, chills, fever, poor appetite, and fatigue, caused by spleen deficiency with damp-phlegm sinking downward, use Buzhong Yiqi Tang plus Fuling (Poria), Banxia (Pinelliae Tuber), and Shaoyao (Paeoniae Radix Alba). If intercourse during illness leads to hardness and urinary/fecal retention, use Liuwei Dihuang Wan formula plus Niuxi (Achyranthis Bidentatae Radix) and Cheqianzi (Plantaginis Semen). After urination and defecation normalize, continue with Buzhong Yiqi Tang.

For ulcerated sores with clear pus, use Shiquan Dabu Tang plus Niuxi (Achyranthis Bidentatae Radix). Externally, apply fermented soybean cake moxibustion. If the sore opening is purple and sunken, add larger amounts of Fuzi (Aconiti Lateralis Radix Praeparata) and apply Aconite cake moxibustion externally. Poor appetite indicates weak stomach; all deficiencies rely on the stomach. Use Liujunzi Tang plus Huoxiang (Agastaches Herba) and Danggui (Angelicae Sinensis Radix). Once appetite improves, use Shiquan Dabu Tang. For post-ulceration chills, anorexia, and thread-like pulse, use 1 liang of Renshen (Ginseng Radix), 3 qian of Fuzi (Aconiti Lateralis Radix Praeparata), decocted with ginger and jujube. Post-ulceration pain indicates qi and blood deficiency; strongly tonify. Tonification restores qi transformation, which eliminates pain.

Furthermore, Huantiao Ju is caused by cold transferring from the spleen to the liver. Only the Lower Jaw of Yellow Dog Formula is effective, combined with supporting stomach qi. Additionally, puncture Weizhong (BL-40) externally to release dark blood for natural recovery.

Fugu Ju (Bone-attached Abscess) (occurs on the lateral thigh), Yaogu Ju (Bone-biting Abscess) (occurs on the medial thigh): Swelling that is hard originates in the sinews and bones, a disease of yin-cold entering the bone. Initially, there are alternating chills and fever, resembling wind pathogen. Subsequently, sinew and bone pain occurs, without redness or heat, pain penetrating to the bone. Severe cases cannot bend or extend, or the skin and flesh are slightly tense, appearing swollen like obesity. These conditions should all be treated with moxibustion and warming compresses to dissipate toxic vapors, tonify yang qi, and warm spleen qi.
Moxibustion method: Around the painful area, apply one hundred moxa cones. If blisters form, it is treatable; if not, it is difficult. Mark the painful spot with ink using a chopstick tip, apply moxibustion for one hundred cones, stopping when popping sounds occur. Effectiveness is indicated when the patient feels pain in the bone. Additionally, for Fugu Ju, moxibustion at Xuanzhong (GB-39) for seven cones; for Yaogu Ju, moxibustion at Yinbao (LR-9) for twenty-one cones; for Huantiao pain, moxibustion at Kunlun (BL-60) for fourteen cones.
For initial chills, fever, and pain, use Ganzhu Dan to induce sweating, followed by Dafengfang Tang to unblock meridians, invigorate blood, and tonify deficiency. For occurrence at the buttocks with diffuse swelling and pain, use Neituo Qianghuo Tang. For occurrence in the inner thigh near the knee with diffuse swelling but no pain, use Neituo Chaihu Tang. For occurrence on the lateral leg with diffuse swelling and pain, use Neituo Jiu Jian Tang.
However, external moxibustion, warming compresses, and washing must be combined to assist yang qi. The kidney governs the bones; kidney deficiency leads to cold bones. Cold pathogen takes advantage, causing qi and blood stagnation, resulting only in swelling, not suppuration. Therefore, Liuzhu (flowing deposits) is residual toxin from cold damage, incomplete resolution from the exterior. Fugu Ju is a deteriorated stage of Liuzhu, caused by error in using cooling medicines. Over time, extreme yin generates yang, cold transforms into heat. Extreme heat causes flesh rot, transforming into pus.
For impending suppuration, use Fuzi Bazhen Tang. For formed pus with distending pain, lance it. In excess cases with thick pus, use Shiquan Dabu Tang; in deficiency cases with clear pus, use Baoyuan Dacheng Tang. If qi fails, death ensues. For poor appetite and fatigue, use Xiangsha Liujunzi Tang. For spleen deficiency with chills and fever, use Buzhong Yiqi Tang. For chronic non-healing ulcers, dead bone will emerge. Observe the pus: white and thin pus indicates initial shedding of dead bone, deep flesh makes removal difficult; white and thick pus indicates imminent shedding of dead bone, shallow flesh allows removal.
Generally, for sores and abscesses not resolving within ten days, support the interior is indicated. Lance if pus exists, remove necrotic tissue if present, tonify if deficient, to achieve complete success. Cases due to relapse into sexual activity and labor injury, causing alternating chills and fever, disharmony of qi and blood, disordered meridians, deepening pathology, result in the thigh swelling gradually like a winter melon, extending up to the hip and abdomen, down to the sole, with diffuse swelling. Long-term ulceration yields white, foul-smelling pus, persistent swelling and pain, declining yuan qi; these are ultimately untreatable.

Tui You Feng (Wandering Wind of the Leg): Sudden redness, swelling, heat, and pain on the outer leg, leaving an indentation like mud when pressed, caused by struggle between wind and heat. Indicate pricking to remove bad blood, take Danggui Nian Tong Tang, and harmonize with Ganzhu Dan.