蛇头疔 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 ，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。但手指系皮肉浅薄之处，不宜灸法，亦不宜开早。若误灸、开早，以致
皮裂 肉翻出，疼痛倍增者，不能速愈，慎之。
\r蛇头疔图\p04-34a162.bmp\r
\r天蛇毒图\p04-34a163.bmp\r
手指经络图歌俱见首卷。
雄黄散
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。
雄黄牡蛎散
牡蛎（ ，四钱） 明雄黄（二钱）
另研细，共和一处，再研匀，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 红闷肿疼，二味细研加蜜水，调敷止痛效又灵。
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）
Shetou Ding (Snakehead Carbuncle) presents with purple discoloration, induration, and pain; Tianshe Du (Heavenly Snake Poison) presents with severe pain accompanied by a sensation of stifling distension, along with redness and swelling. Both conditions are associated with Fire-Heat in the Spleen Meridian, and the specific meridian involved can be determined by identifying which finger is affected.
[Note] These two conditions both occur at the tips of the fingers. Although each finger has its own dedicated meridian, they all involve the accumulation of Fire-Toxin from the Spleen Meridian. Shetou Ding originates from deep within the sinews and bones, characterized by a deep root and heavy toxicity. Initially, the lesion is small, purple in color, painful, and hard as a nail. In the early stage, it is appropriate to administer Chansu Wan (Toad Venom Pill) to induce sweating, and apply Xionghuang San (Realgar Powder) externally. Tianshe Du originates from the muscle layer, with slightly less severe toxicity. Initially, it presents as stifling swelling without a distinct head, red in color, with burning pain. In the early stage, it is appropriate to administer Chansu Wan (Toad Venom Pill) to induce sweating, and apply Xionghuang Muli San (Realgar and Oyster Shell Powder) externally. When pus formation is imminent for either condition, Xianfang Huoming Yin (Immortal Life Decoction) should be taken orally. Once the pus is ripe, incision and drainage should be performed, followed by the application of Hupo Gao (Amber Plaster) to promote pus discharge and tissue regeneration. If the patient's deficiency prevents wound contraction, tonification therapy should be employed. However, the fingers are areas where skin and flesh are thin; moxibustion is contraindicated, and premature incision should be avoided. If moxibustion is mistakenly applied or incision is performed too early, causing skin rupture and evisceration of flesh, resulting in doubled pain, rapid healing will not be possible. Caution is advised.
The songs describing the meridians of the fingers are found in the first volume.
Xionghuang San (Realgar Powder)
Ingredients: Ming Xionghuang (Realgar, 2 qian), Qingfen (Calomel, 5 fen), Chansu (Toad Venom, 2 fen), Bingpian (Borneol, 1 fen).
Preparation and Administration: Grind all ingredients into a fine powder. Mix with fresh cold water to form a thick paste. Warm the mixture in a double boiler. Apply to the affected finger, cover with thin paper, and change 3–4 times daily.
[Prescription Song] Xionghuang San treats Shetou Ding, with purple pain and a hard root due to attacking Fire-Toxin; Borneol, Toad Venom, and Calomel ground into powder, mixed with drawn water and applied, sealed with paper.
Xionghuang Muli San (Realgar and Oyster Shell Powder)
Ingredients: Muli (Oyster Shell, calcined, 4 qian), Ming Xionghuang (Realgar, 2 qian).
Preparation and Administration: Grind each ingredient separately into a fine powder, then mix and grind uniformly. Mix with honey water to form a thick paste. Warm in a double boiler. Apply to the affected finger to relieve pain. Use 5–6 times daily.
[Prescription Song] Xionghuang and Muli treat Tianshe Du, for red, stifling, swollen, and painful fingertips; these two ingredients ground finely with honey water, applied topically to stop pain with effective and miraculous results.
Chansu Wan (See Section on Ding Sores)
Xianfang Huoming Yin (See Section on Swollen Ulcers)
Hupo Gao (Amber Plaster) (See Section on Scalp Hairline Sores)