【方歌】蛇头疔疱紫硬疼，天蛇毒疼闷肿红，二证俱兼脾经火，
看生何指辨专经。
【注】此二证俱生于手指顶尖。夫手指虽各有专经，然俱兼脾
经火毒而成。蛇头疔自筋骨发出，根深毒重，初起小疱
，色紫疼痛，坚硬如钉，初宜服蟾酥丸汗之，外敷雄黄
散。天蛇毒自肌肉发出，其毒稍轻，初起闷肿无头，色
红，痛如火燎，初宜服蟾酥丸汗之，外敷雄黄牡蛎散。
二证脓势将成，俱服仙方活命饮，脓熟开之，外贴琥珀
膏煨脓生肌治之，虚不能敛者补之。但手指系皮肉浇薄
之处，不宜灸法，亦不宜开早。若误灸、开早，以致皮
裂努肉翻出，疼痛倍增者，不能速愈，慎之。
手指经络图歌俱见首卷。
方剂：雄黄散
组成：明雄黄（二钱） 轻粉（五分）
蟾酥（二分） 冰片（一分）
共研细末，新汲水调浓，重汤炖温，敷于患指，用
薄纸盖之，日换三、四次。
【方歌】雄黄散治蛇头疔，紫痛根坚火毒攻，冰片蟾酥轻粉末，
汲水调涂用纸封。
又方：雄黄牡蛎散
组成：牡蛎（〔火段〕，四钱） 明雄黄（二钱）
另研细，共和一处，再研匀，加蜜水调浓，重汤炖
温，涂于患指，能止疼痛，日用五、六次。
【方歌】雄黄牡蛎天蛇毒，指头焮红闷肿疼，二味细研加蜜水，
调敷止痛效又灵。
又方：蟾酥丸（见疔疮门）
仙方活命饮（见肿疡门）
琥珀膏（见头部发际疮内）
[Prescription Verse] She Tou Ding (Snake-Head Carbuncle) presents with purple, hard, and painful vesicles; Tian She Du (Heavenly Snake Poison) presents with severe pain, stifling swelling, and redness. Both conditions involve fire pathogen of the Spleen Meridian;
observe which finger is affected to identify the specific meridian.
[Annotation] These two conditions both occur at the tips of the fingers. Although each finger has its own dedicated meridian, they all involve fire-toxin from the Spleen Meridian. She Tou Ding (Snake-Head Carbuncle) arises from the sinews and bones, with a deep root and heavy toxin. Initially, small vesicles appear, purple in color, painful, and hard as a nail. In the early stage, it is appropriate to administer Chan Su Wan (Toad Venom Pill) to induce sweating, and externally apply Xiong Huang San (Realgar Powder). Tian She Du (Heavenly Snake Poison) arises from the muscles, with slightly milder toxicity. Initially, there is stifling swelling without a head, red in color, and burning pain like fire. In the early stage, it is appropriate to administer Chan Su Wan (Toad Venom Pill) to induce sweating, and externally apply Xiong Huang Mu Li San (Realgar and Oyster Shell Powder). When pus is about to form in either condition, Xian Fang Huo Ming Yin (Immortal Formula for Preserving Life) should be administered. Once the pus is ripe, incision and drainage are performed, followed by external application of Hu Po Gao (Amber Plaster) to promote pus discharge and tissue regeneration. For those with deficiency who cannot heal, tonification is used. However, the fingers are areas where skin and flesh are thin; moxibustion is not suitable, nor is early incision. If moxibustion is mistakenly applied or incision is done too early, causing skin rupture and protrusion of granulation tissue, resulting in doubled pain, rapid healing will not occur. Be cautious.
The songs for the meridian diagrams of the fingers are found in the first volume.
Formula: Xiong Huang San (Realgar Powder)
Composition: Ming Xiong Huang (Realgar, 2 qian) Qing Fen (Calomel, 5 fen)
Chan Su (Toad Venom, 2 fen) Bing Pian (Borneol, 1 fen)
Grind together into fine powder. Mix with fresh cold water to a thick consistency. Warm in a double boiler. Apply to the affected finger, cover with thin paper, and change 3-4 times daily.
[Verse] Xiong Huang San treats She Tou Ding (Snake-Head Carbuncle); purple pain and hard root due to fire-toxin attack. Grind Borneol, Toad Venom, and Calomel into powder,
mix with drawn water for application and seal with paper.
Another Formula: Xiong Huang Mu Li San (Realgar and Oyster Shell Powder)
Composition: Mu Li (Ostreae Concha, calcined, 4 qian) Ming Xiong Huang (Realgar, 2 qian)
Grind separately into fine powder, mix together, and grind uniformly. Add honey water to make a thick paste. Warm in a double boiler. Apply to the affected finger. It can relieve pain. Use 5-6 times daily.
[Verse] Xiong Huang Mu Li San treats Tian She Du (Heavenly Snake Poison); inflamed redness, stifling swelling, and pain at the fingertip. Grind the two ingredients finely, add honey water,
apply mixed for pain relief with effective and miraculous results.
Another Formula: Chan Su Wan (Toad Venom Pill) (See Section on Ding Chuang/Carbuncles)
Xian Fang Huo Ming Yin (Immortal Formula for Preserving Life) (See Section on Zhong Yang/Swelling Ulcers)
Hu Po Gao (Amber Plaster) (See Section on Head Hairline Sores)