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[Verse] Gu Yin Ju (Abscess of the Inner Thigh) occurs in the middle of the large thigh, presenting with hard swelling and pain on the side of the scrotum. It is caused by disharmony of the Seven Emotions, specifically worry and indignation. After ulceration, the condition lingers and is difficult to heal successfully.

[Note] This syndrome is also known as Chi Shi (Red Discharge). It occurs on the side of the inner thigh near the scrotum, close to the medial seam. Because it is located in the Jueyin Meridian (Liver and Pericardium channels), it is called Da Gu Ju (Large Thigh Abscess). The area is hard, diffusely swollen, and numb/painful. It results from the congealing of Qi and Blood due to emotional disharmony, such as worry, overthinking, and indignation. Since the lesion is in a Yin meridian, its onset and suppuration are slow. After ulceration, it tends to linger, and few cases achieve successful healing. The initial treatment is the same as for Gu Gu Ju (Bone-attached Abscess). For swelling, refer to the "Sores and Ulcers - Swelling Stage" section; for ulceration, refer to the "Ulcer Stage" section.

[Verse] Heng Xuan Ju (Horizontal Mysterious Abscess) appears on the left, and Yin Ju (Yin Abscess) on the right. There is hard swelling and pain in the crease of the inner thigh. Pain radiates to the testicles, and the shape is elongated like a clam. This is caused by stagnation and congealing of the Three Yin meridians and emotional depression.

[Note] Both syndromes occur in the creases of the inner thigh. The one on the left is Heng Xuan Ju, and the one on the right is Yin Ju. They belong to the Three Yin meridians and result from congealing due to emotional stagnation. The area is diffusely swollen and hard with intermittent pain. In severe cases, pain radiates to the testicles and extends upward to the lower abdomen, taking an elongated shape like a clam. It takes one or two months to ulcerate, indicating deep pus. If the pus is thick after rupture, it can heal; if it is foul serum, it is difficult to close the wound and will likely become a fistula over time. Initial treatment is the same as for Gu Gu Ju. For ulceration, refer to the "Sores and Ulcers - Ulcer Stage" section. If pus drains continuously for a long time, worms may appear, resembling roundworms. This is transformed from long-standing deep pus stagnation and is considered a adverse sign (Ni Zheng).

[Verse] It is contraindicated to have Ju (abscesses) at the Futu Acupoint. Swelling and hardness here make acupuncture and moxibustion unsuitable. Pain pierces the heart accompanied by alternating chills and fever. Due to stomach fire and toxic stagnation, it is difficult to treat after ulceration.

[Note] The classics state: Sores should not occur at Futu. Futu is an acupoint of the Stomach Meridian, located six cun above the knee cap in the center, feeling like a palm-sized mound of high flesh when pressed firmly. Acupuncture and moxibustion are strictly prohibited here. Initially, there are alternating chills and fever, and severe pain reaching the heart/chest. This is caused by stomach fire and toxic stagnation. Healing after ulceration is extremely difficult. Initial treatment is the same as for Gu Gu Ju. For ulceration, refer to the "Ulcer Stage" section.

[Verse] Gu Yang Ju (Yang Abscess of the Thigh) arises on the lateral aspect of the thigh. The toxin presses inward against the bone without changing skin color. Huan Tiao Ju (Abscess at Huan Tiao) causes leg swelling and difficulty extending the limb. Both are caused by the congealing of Wind, Dampness, and Cold.

[Note] Gu Yang Ju occurs on the lateral thigh, posterior to the greater trochanter. The toxin presses inward into the bone joints, and the pus is deep, reaching the bone, hence the diffuse swelling without skin discoloration. Huan Tiao Ju occurs at the Huan Tiao Acupoint between the hip joint bones, causing difficulty in bending and extending the waist, presenting as diffuse swelling and dull pain. These two syndromes are caused by the congealing of Wind, Dampness, and Cold, and belong to the Foot Shaoyang Gallbladder Meridian. Initially, Huang Gou Xia Ke Fang (Yellow Dog Mandible Decoction) should be taken. Additionally, puncture Weizhong Acupoint to release dark blood, which will immediately allow leg movement. If there is diffuse swelling and severe pain, Nei Tuo Huang Qi Tang (Internal Supportive Astragalus Decoction) is suitable. If there is pain with tendon spasm, Wan Ling Dan (Myriad Spirits Pill) should be used to induce sweating. Once pain subsides, switch to Shen Ying Yang Zhen Dan (Divine Response Nourishing True Pill). For wandering pain throughout the body and swelling on the dorsum of both feet, take Wan Ling Dan to induce sweating. Once pain stops, take Da Fang Feng Tang (Great Saposhnikovia Decoction) with increased doses of Ren Shen (Ginseng), Bai Zhu (Atractylodes), Dang Gui (Angelica Sinensis), and Huang Qi (Astragalus) to promote circulation and resolution. If there is throbbing pain indicating imminent ulceration, take Tuo Li Tou Nong Tang (Supporting Interior and Penetrating Pus Decoction). If the pus is thin after ulceration, take Shi Quan Da Bu Tang (Comprehensive Great Tonifying Decoction) plus Xu Dui (Achyranthes Bidentatae Radix), and apply Dou Chi Bing Moxibustion externally. If the sore mouth is purple and depressed, take Shi Quan Da Bu Tang plus Fu Zi (Aconite Lateral Root) and apply Fu Zi Bing Moxibustion externally. Poor appetite indicates weak Stomach Qi; all deficiencies derive from the Spleen and Stomach. Take Xiang Sha Liu Jun Zi Tang (Fragrant Amomum Six Gentlemen Decoction) minus Sha Ren (Amomum Fructus) plus Dang Gui. Once appetite strengthens, resume Shi Quan Da Bu Tang. Pain after ulceration indicates Qi and Blood deficiency; treatment requires vigorous tonification. All external treatments follow the "Sores and Ulcers - Swelling Stage" and "Ulcer Stage" sections. However, Huan Tiao Ju often leads to chronic lower limb disability (Zhong Ji) after ulceration.

Formula: Huang Gou Xia Ke Fang (Yellow Dog Mandible Powder)
Composition: Yellow Dog Mandible (including tongue and skin, split off, placed in a jar, sealed with salt mud, covered with an iron lid, roasted for the duration of one incense stick. Stop when smoke clears. Must preserve medicinal properties; target color is black like charcoal. If white remains, the property is exhausted and it is useless. Grind into fine powder for use. Use mandibles from slaughtered dogs; live capture or specific killing is avoided to prevent bad omens.)
Wan Dou Fen (Pisum Sativum Seed Powder)
Bai Lian Mo (Ampelopsis Japonica Rhizome Powder)
Mix equal parts of these three ingredients. Take 5 qian per dose, mixed with warm yellow wine on an empty stomach. Externally, mix this medicine with sesame oil and apply to the affected area. The effect is confirmed by the discharge of foul sweat and falling into a deep sleep after ingestion.

[Verse] Yellow Dog Mandible with tongue and skin, sealed in mud and roasted appropriately. Add Pisum Sativum Seed Powder and Ampelopsis Japonica Rhizome. Mixed with wine, it cures buttock and thigh abscesses.

Alternative Formulas: Nei Tuo Huang Qi Tang (see Gu Gu Ju); Da Fang Feng Tang (see Gu Gu Ju); Wan Ling Dan (see Sores and Ulcers - Swelling Stage); Shen Ying Yang Zhen Dan (see Head部的 You Feng); Tuo Li Tou Nong Tang (see Head部的 Qin Nao Ju); Shi Quan Da Bu Tang, Xiang Sha Liu Jun Zi Tang (see Ulcer Stage); Fu Zi Bing (see Volume 1 Moxibustion Methods).