痘痈发于收靥之后。由毒瓦斯留藏于经络虚处。或关节动处。轻者止生结核肿疖。甚者头项胸背尽皆
流注。难医。由实热者。用赤芍、甘草节、连翘、桔梗之类。上引升麻、葛根。下引槟榔、牛膝。更助以贝母、忍冬、
栝蒌、白芷。寒热加芩、柏。散瘀加苏木、红花。便闭加大黄。气血虚者。身凉不渴。慎用苦寒。反伤中气。兼服
保元汤为要。外用马齿苋杵汁。猪脂、石蜜。共熬成膏涂之。或天麻子肉。捣松香末为膏贴之。脓者针之。
溃者 海巴儿掺之。干用油调。
射干粘子汤 治痘疹后。痈疽疮毒。
鼠粘子（二钱） 射干 升麻 甘草（各五分）
水一钟。煎六分服。
痘风疮。先则细疮作痒。次沿成片。脂水浸淫。由痘后遇风所致。宜麦饯散搽之。兼避风戒口。甚者瘙痒
浸淫。肌无完肤。而成痘癞。急用十全大补汤大补气血。苦参丸清热解毒。二方合而服之。外涂灭瘢救
苦散。
麦饯散 小麦一合。炒枯黄色。乘热入钵内。和硫黄四钱白砒一钱为末。搅匀待冷。加烟胶八钱川椒
三钱枯矾二钱共末。和匀。先用葱汤洗净。麻油调搽。油纸盖孔。三日一换。三次愈。
苦参丸
苦参（一两） 白蒺藜 胡麻 牛蒡子（各五钱） 甘草（二钱五分）
为末。酒糊为丸。竹叶汤送下。
灭瘢救苦散
密陀僧 滑石（各二两） 白芷（五钱）
上为末。湿则干掺。干用白蜜调敷。
痘后疳蚀疮 毒壅肌肉。内透筋骨。外连皮肤。时痛出血。日久不瘥。宜十全大补汤搽绵茧散。
绵茧散
Dingyong (carbuncle following smallpox) occurs after the scabs of smallpox have fallen off. It is caused by toxic factors remaining and hiding in the deficient areas of the meridians or at joint movements. In mild cases, only nodular swellings and boils appear; in severe cases, Liuzhu (flowing abscesses where toxins spread causing multiple abscesses) occurs all over the head, neck, chest, and back, making it difficult to treat. For excess-heat patterns, use Chishao (Radix Paeoniae Rubra), Gancaojie (Node of Radix Glycyrrhizae), Lianqiao (Fructus Forsythiae), Jiegeng (Radix Platycodonis), etc. Add Shengma (Rhizoma Cimicifugae) and Gegen (Radix Puerariae) to guide the medicine upward; add Binglang (Semen Arecae) and Niuxi (Radix Achyranthis Bidentatae) to guide it downward. Further assist with Beimu (Bulbus Fritillariae Cirrhosae), Rendong (Flos Lonicerae), Gualou (Fructus Trichosanthis), and Baizhi (Radix Angelicae Dahuricae). For alternating chills and fever, add Huangqin (Radix Scutellariae) and Huangbai (Cortex Phellodendri). For blood stasis, add Sumu (Lignum Sappan) and Honghua (Flos Carthami). For constipation, add Dahuang (Radix et Rhizoma Rhei). For Qi and Blood deficiency, characterized by a cool body and no thirst, bitter-cold herbs must be used cautiously to avoid damaging Zhongqi (Middle Jiao Qi/Spleen-Stomach Qi). Taking Baoyuan Tang (Preserve the Origin Decoction) as an adjunct is essential. Externally, apply a paste made by crushing Machixian (Herba Portulacae), pig fat (Zhi), and rock sugar (Shimi). Alternatively, use Tianmaziren (Semen Cannabis) flesh mixed with Songxiang (Resina Pini) powder as a plaster. If pus has formed, puncture with a needle. If ulcerated, apply Haibarer San (Haibarer Powder). If dry, mix with oil for application.
Shegan Niuzi Tang (Belamcanda and Burdock Seed Decoction): Treats carbuncles, sores, and toxic sores after smallpox/rash.
Niuzi (Niu Bang Zi / Semen Arctii) 2 qian, Shegan (Rhizoma Belamcandae), Shengma (Rhizoma Cimicifugae), Gancao (Radix Glycyrrhizae) each 0.5 qian.
Decoct with one zhong of water until reduced to 0.6 zhong, then take orally.
Doufengchuang (Wind-induced rash after smallpox) initially presents as fine sores with itching, which then spread into patches with exudation of serum. It is caused by exposure to wind after smallpox. It is suitable to apply Maijian San externally while avoiding wind and observing dietary restrictions. In severe cases, intense itching and exudation occur, leaving no intact skin, resulting in Doulai (smallpox-derived dermatitis/scarring). Urgently use Shiquan Dabu Tang (Ten Substance Great Supplement Decoction) to greatly tonify Qi and Blood, combined with Kushen Wan (Sophora Pill) to clear heat and detoxify. Take both formulas together. Externally apply Miecan Jiuku San (Scar-Extinguishing and Suffering-Saving Powder).
Maijian San: Xiaomai (Frumentum Tritici) 1 he, stir-fried until dark yellow. While hot, place in a mortar, add Liuhuang (Sulfur) 4 qian and Baipi (Arsenic Trioxide) 1 qian, grind into powder, mix well, and let cool. Then add Yanjiao (Smoke Glue/Resin) 8 qian, Chuanjiao (Pericarpium Zanthoxyli) 3 qian, and Kufan (Alumen Exsiccatum) 2 qian, grind into powder, and mix uniformly. First wash the lesion with Congtang (Scallion decoction), mix with Mayou (Sesame Oil) for application, cover with oiled paper, change once every three days. Three applications will cure it.
Kushen Wan: Kushen (Radix Sophorae Flavescentis) 1 liang, Baijili (Fructus Tribuli), Huma (Semen Sesami Nigrum), Niubuzi (Semen Arctii) each 5 qian, Gancao (Radix Glycyrrhizae) 2.5 qian.
Grind into powder, make pills with wine paste. Take with Zhuyetang (Bamboo Leaf Decoction).
Miecan Jiuku San: Mituoseng (Litharge/Oxide of Lead), Huashi (Talcum) each 2 liang, Baizhi (Radix Angelicae Dahuricae) 5 qian.
Grind all into powder. If wet, sprinkle dry powder; if dry, mix with Baimi (White Honey) for application.
Douhou Ganshichuang (Post-smallpox gan erosion sore): Toxic factors stagnate in muscles, penetrate inward to bones and sinews, and connect outward to the skin. It causes intermittent pain and bleeding, and does not heal for a long time. Use Shiquan Dabu Tang internally and Mianjian San externally.
Mianjian San