此症生手、足各指（或云只生手足第四指者是），或生指头，或生指节、指缝。初生或
白
手
用
用
少
又方∶大人用阳和汤，小儿用小金汤，重则用犀黄丸（均见痈疽诸方），色红者，照上
蛇
又方∶甘草嚼融，浓敷，干则随换，日夜不断，数日必愈，神效。
又名嵌甲。凡指甲边生一赤肉突出，时常举发者，甲疽也。用野狼毒一两，黄 二两，醋
浸一宿，入猪油五两，微火上煎取二两，绞去渣，退火气敷之，日换三次，神效。此林屋山
人方也。
又方∶乳香、胆矾，研细时时敷之。此病须剔去甲，不药亦愈。若已成疮，久不愈者，
此方甚效。
又方∶皂矾五钱，火 候冷研末，先以盐汤洗疮拭干，以矾末敷之，旧绸裹定，一日一
换，神效。或用枯矾亦可，惟敷之微觉疼痛。
又方∶陈皮浓煎汤，浸良久，甲肉自相离开，轻手剪去肉中爪甲。外用蛇蜕烧灰，雄黄
一钱为末干掺，或香油调敷。
又方∶轻粉、乳香、没药各一钱，黄丹二钱，赤石脂五钱，寒水石三钱（煨），共为末，
湿则干掺，干则油调，最妙。
又方∶甘草嚼融浓敷，干则随换，数日全愈，神效。
又方∶见头部头角太阳生疮方。
每日取凤仙花（又名指甲花）连根蒂叶捣敷指甲上，用布包好，一日一换，月余乃愈。
此
这种病症生在手指或脚趾的各个指节上（也有说法认为只生在手足第四指），或者生在指尖，或者生在指节、指缝之间。初起时可能表现为白色……
另一个方子：成人使用阳和汤，小儿使用小金汤，病情严重的则使用犀黄丸（以上方剂均见于痈疽诸方章节），如果患处颜色发红，参照上述方法处理。
蛇……
另一个方子：将甘草嚼烂融成浆状，浓稠地敷在患处，干了就随时更换，日夜不间断，几天后必定痊愈，效果神奇。
又被称为嵌甲。凡是指甲边缘长出一块赤色肉芽突出，时常发作的，叫做甲疽。用野狼毒一两，黄芩二两，醋浸泡一夜，加入猪油五两，在微火上煎取二两药液，过滤去掉药渣，待退去火气后敷在患处，每天更换三次，效果神奇。这是林屋山人的方子。
另一个方子：将乳香、胆矾研成细末，时时敷在患处。此病必须剔除指甲，即使不用药也能痊愈。如果已经形成疮疡，久不愈合的，此方非常有效。
另一个方子：皂矾五钱，用火煨至火候合适后冷却研成粉末，先用盐汤清洗疮口并擦干，将矾末敷在上面，用旧绸布包裹固定，一天更换一次，效果神奇。也可以使用枯矾，只是敷上去时会稍微感到疼痛。
另一个方子：陈皮浓煎成汤，浸泡很久，指甲与肉自然分离，轻轻用手剪去肉中的爪甲。外用蛇蜕烧成的灰，加上雄黄一钱研成末干撒，或者用香油调匀后敷贴。
另一个方子：轻粉、乳香、没药各一钱，黄丹二钱，赤石脂五钱，寒水石三钱（煨制），共同研成粉末，患处湿润则干撒粉末，干燥则用油调敷，最为妙用。
另一个方子：将甘草嚼烂融成浆状浓敷，干了就随时更换，几天后完全痊愈，效果神奇。
用瓷锋在指甲上刨去一层，并用枯矾末敷在上面，其效果如神。
每天取凤仙花（又名指甲花）连根蒂叶捣烂敷在指甲上，用布包好，一天更换一次，一个多月才能痊愈。
This condition appears on the fingers or toes (some say it only occurs on the fourth finger of the hands and feet), or at the fingertip, or on the phalanges and interdigital spaces. Initially, it may present as white...
Another prescription: For adults, use Yanghe Decoction (Warming and Harmonizing Decoction); for children, use Xiaojin Tang (Little Gold Decoction); for severe cases, use Xihuang Wan (Rhinoceros Horn Pill) (all mentioned in the section on various prescriptions for carbuncles and sores). If the affected area is red, follow the aforementioned method.
Snake...
Another prescription: Chew licorice root until it melts into a paste, apply it thickly to the affected area, replace it whenever it dries, day and night without interruption, and it will surely heal within a few days with miraculous efficacy.
Also known as ingrown nail. Whenever a piece of reddish flesh protrudes from the edge of the nail and frequently flares up, it is called Onychia (Nail Abscess). Use one tael of Radix Stellerae Chamaejasme (Wild Wolf Poison), two taels of Radix Scutellariae (Scutellaria), soak them in vinegar overnight, add five taels of Pig Fat, simmer gently over a low fire until two taels of liquid remain, filter out the dregs, let it cool down to remove the "fire qi," and apply it to the lesion. Change three times a day with miraculous efficacy. This is a prescription by Linwu Shanren.
Another prescription: Grind Frankincense (Resina Olibanum) and Chalcanthite (Vitriolum Caeruleum) into fine powder and apply it frequently to the affected area. This disease requires the removal of the nail; even without medication, it will heal. If an ulcer has already formed and fails to heal for a long time, this prescription is very effective.
Another prescription: Take five qian of Alum (Ferric Ammonium Sulfate), calcine it until properly heated, then grind into powder after cooling. First wash the wound with salt water and dry it, then apply the alum powder, wrap securely with old silk cloth, and change once a day with miraculous efficacy. Calcined Alum can also be used, though it may cause slight pain upon application.
Another prescription: Decoct dried tangerine peel (Pericarpium Citri Reticulatae) in concentrated soup, soak for a long time until the nail separates naturally from the flesh, then gently clip away the nail embedded in the flesh. Externally, apply ash from burned Snake Slough (Ophichus Skin) mixed with one qian of Realgar (Arsenic Sulfide) powder, either sprinkled dry or mixed with sesame oil for application.
Another prescription: Mix one qian each of Calomel (Mercurous Chloride), Frankincense (Resina Olibanum), and Myrrh (Resina Myrrhae), two qian of Minium (Lead Tetroxide), five qian of Red Kaolin (Halloysitum Rubrum), and three qian of Halloysitum (Calcined). Grind all into powder. If the area is moist, sprinkle the powder dry; if dry, mix with oil for application. This is most excellent.
Another prescription: Chew licorice root until it melts into a thick paste and apply it; replace whenever it dries. It will completely heal within a few days with miraculous efficacy.
Another prescription: Refer to the prescription for sores occurring on the head, horns, or Taiyang acupoint.
Use a porcelain blade to shave off a layer from the nail surface, and apply calcined alum powder on top; its effect is miraculous.
Daily, take Balsam Flower (Impatiens balsamina, also known as Nail Flower) including roots, stems, and leaves, crush them, and apply the paste to the nail. Wrap with cloth and change once a day. It takes more than a month to heal.