必效疗阴疮，阴边如粟粒生疮及湿痒方。
以槐北面不见日处白皮一大握，盐三指一撮，以水二大升，煮取一升洗之，日三五遍，
适寒温用，若涉远恐冲风，即以米粉和涂之神效。
又疗阴疮有二种，一者作白脓出，名曰阴蚀疮，二者但赤作疮，名为热疮，若是热疮用
此方。
取黄柏黄芩各一两切，作汤洗之，用黄柏黄连末粉之，云神良。
又方
以黄连和胡粉末敷之，必效。
又方
紫芽茶末（一分） 荷叶（一片烧灰）
上二味为末，以盐浆水洗讫，敷之，三五度即愈。
又方
取停水处干卷地皮末敷之，神效。（是长安郭承恩用之得效出第四卷中）
救急邂逅着 砂损阴方。
猪蹄（一具擘破） 浮萍草（三两）
上二味，以水三大升，煮取半升去滓，以瓶子盛汁，纳阴瓶中渍之，冷即出拭干，便敷
后药粉之。
又粉法。
蔷薇根皮 黄柏（各三分） 朴硝 蛇床子（各一分） 甘草（二分炙）
上五味捣为散，用前法浸洗后，以粉疮上，亦不甚痛，慎风。（出第八卷中）
必效主着 砂方。
取鸡子一枚煮熟，剥取肉，更用生鸡子二个倾取白和，熟研令细，以绵裹之立定。（李
饶州云奇效）
又方
甘草 黄柏 白矾（烧令汁尽）
上三味为末敷之。（出第四卷中）
《必效方》治疗阴部疮疡，阴部边缘长出如粟米大小的疮疡且伴有潮湿瘙痒的方剂。
取朝北且不见阳光的槐树内层白皮一大把，盐三指撮，用水两大升，煎煮至剩一升，用此药液清洗患处，每日洗三到五次，水温要适宜寒温适中，如果路途遥远担心受风，就用米粉调和后涂抹，效果神奇。
又治疗阴部疮疡有两种类型，一种是流出白色脓液，称为“阴蚀疮”；另一种只是发红形成疮疡，称为“热疮”，如果是热疮使用这个方子。
取黄柏、黄芩各一两切碎，煎汤清洗患处，再用黄柏、黄连研成的粉末撒敷在疮上，据说非常灵验。
另一个方子：
将黄连与胡粉混合后敷在患处，必定有效。
又一个方子：
紫芽茶末（一分） 荷叶（一片烧成灰）
以上两味药研成粉末，先用盐水浆水清洗完毕，然后敷在患处，三到五次即可痊愈。
又一个方子：
取积水处干燥的地皮研成粉末敷在患处，效果神奇。（这是长安人郭承恩使用有效的方子，出自第四卷中）
急救临时被砂砾损伤阴部的方剂。
猪蹄（一只掰开） 浮萍草（三两）
以上两味药，用水三大升，煎煮至剩半升，去掉药渣，用瓶子盛装药汁，将阴部放入瓶中浸泡，变冷就取出擦干，随即敷上后面的药粉。
又是另一种撒粉的方法。
蔷薇根皮 黄柏（各三分） 朴硝 蛇床子（各一分） 甘草（二分，炙过）
以上五味药捣碎制成散剂，用前面的方法浸洗之后，将药粉撒在疮口上，也不会很痛，注意避风。（出自第八卷中）
《必效方》主治被砂砾损伤的方剂。
取鸡蛋一枚煮熟，剥去蛋壳取蛋白，再用两个生鸡蛋倾出蛋清与之混合，仔细研磨细腻，用棉布包裹住固定。（饶州刺史李饶说奇效）
又一个方子：
甘草 黄柏 白矾（烧至液体流尽）
以上三味药研成粉末敷在患处。（出自第四卷中）
The *Bixiao Fang* (Miraculously Effective Prescriptions) treats yin sores, specifically sores appearing on the edges of the yin region like millet grains, accompanied by dampness and itching.
Take a large handful of the white inner bark from the north-facing side of a locust tree (Sophorae Tonkinensis Cortex), which has never seen sunlight, and a pinch of salt held between three fingers. Boil these in two large sheng of water until one sheng remains. Wash the affected area with this decoction, three to five times a day. Use it at a comfortable temperature. If traveling a long distance and fearing exposure to wind, mix the powder with rice flour and apply it topically; this is miraculously effective.
Furthermore, there are two types of yin sores: one type discharges white pus, called Yin Shi Chuang (Yin Erosion Sore); the other type is merely red and forms a sore, called Re Chuang (Heat Sore). For heat sores, use this prescription.
Take Huangbai (Phellodendri Cortex) and Huangqin (Scutellariae Radix), each one liang, cut them into pieces, and wash the area with the decoction. Then, apply a powder made from Huangbai (Phellodendri Cortex) and Huanglian (Coptidis Rhizoma); it is said to be excellent.
Another prescription:
Mix Huanglian (Coptidis Rhizoma) with Hufen (Lead Carbonate) and apply topically. It is certainly effective.
Another prescription:
Ziya Cha Mo (Purple Bud Tea Powder) (one fen)
Heye (Lotus Leaf) (one piece, burned to ash)
Grind the above two ingredients into powder. After washing thoroughly with saline solution, apply the powder to the sore. It will heal in three to five applications.
Another prescription:
Take the dry soil skin from places where water stagnates, grind it into powder, and apply it topically. This is miraculously effective. (This was used successfully by Guo Cheng'en of Chang'an, as recorded in Volume 4.)
Emergency prescriptions for sudden injury to the yin region caused by sand or gravel.
Zhuti (Pig's Trotter) (one whole, split open)
Fuping Cao (Lemna Minoris Herba) (three liang)
Boil the above two ingredients in three large sheng of water until half a sheng remains. Strain out the dregs. Store the liquid in a bottle. Immerse the yin region in the bottle. When the liquid cools, remove it, wipe dry, and then apply the following powder.
Another method of applying powder:
Qiangwei Genpi (Rosae Rugosae Radicis Cortex)
Huangbai (Phellodendri Cortex) (each three fen)
Puxiao (Natrii Sulfas)
Shechuangzi (Cnidii Fructus) (each one fen)
Gancao (Glycyrrhizae Radix et Rhizoma) (two fen, honey-fried)
Grind the above five ingredients into a powder. After soaking and washing with the previous method, sprinkle the powder onto the sore. It will not cause much pain. Avoid exposure to wind. (Recorded in Volume 8.)
*Bixiao Fang* (Miraculously Effective Prescriptions) treats injuries caused by sand.
Take one egg, boil it hard, peel off the shell, and take the white part. Mix this with the whites of two raw eggs. Grind finely. Wrap in cotton cloth and secure firmly. (Li Raozhou stated this is remarkably effective.)
Another prescription:
Gancao (Glycyrrhizae Radix et Rhizoma)
Huangbai (Phellodendri Cortex)
Baifan (Alumen) (burned until the liquid evaporates completely)
Grind the above three ingredients into powder and apply topically. (Recorded in Volume 4.)