病源反花疮者，由风毒相搏所为，初生如饭粒，其头破则血出，便生恶肉，渐大有根，
浓汁出，肉反散如花状，因名反花疮，凡诸恶疮久不瘥者，亦恶肉反出如反花形也。（出第
三十五卷中）
千金疗一切久不瘥诸恶疮，兼反花疮，大神验方。
鼠粘子草根细切熟捣，和以腊月猪脂，封贴肿疮上，取瘥止。（出第二十三卷中）
必效疗反花疮方。
柳枝叶以水煎成膏如稠饧，涂之良。
又方
取马齿草烧灰敷之，频贴瘥止。（千金同）
又方
盐灰敷之神验。（并出第四卷中）
千金疗鱼脐疮似新火针疮，四边赤，中央如欲黑色，可针刺之若不痛，即可畏也方。（
亦名鱼脐疔）
腊月鱼头灰，以乱发灰等分，以鸡稀溏屎和令相得，封疮上，频贴瘥止，此疮见不足言
而能杀人。
又方
以寒食饧封之，又硬者烧灰涂贴敷之，即瘥。
又疗鱼脐疮，其头白似肿，痛不可忍者方。
先以针刺疮上及四畔作孔，捣白芷取汁，滴着疮孔中，如无，以干白芷末用敷。（一云
白苣）
又方（本方云赤根疔疮）
取鼢鼠壤土，以水和如泥，涂粘贴，热则易之瘥。
又方
马牙齿捣末，以腊月猪脂和涂之，拔根出，即止亦烧灰用。
又方（本方云疗犯疔疮）
刺疮头及四畔，令汁极出，捣生栗黄敷上，以面围之，勿令黄出，自旦至午根必出。
又方（同上）
以面围疮如前法，以针乱刺疮上及四畔，取铜器煎醋令沸，泻着面围中，令容一盏，冷
即易之，不过三度即拔根出。
又方（同上）
以水四升煮蛇蜕皮如鸡子大，三四沸，去滓，服之立愈，又烧蛇皮灰以鸡子清和涂上瘥
。（并出第二十三卷中）
崔氏疗鱼脐毒疮肿方。
疮初生之时，头白如黍米许大，当中黑如蚁，四畔赤，至四五日之后，疼痛不可忍，似
溃不
即得
又方
取瞿麦和生油，熟捣涂之亦佳。（并出第五卷中）
[Pathogenesis] Fan Hua Chuang (Reverse Flower Sore) is caused by the struggle between wind-toxin and pathogenic factors. Initially, it appears like a grain of rice; when the head breaks, blood flows out, followed by the growth of foul flesh. It gradually enlarges with a root, exuding thick pus, and the tissue spreads outward resembling a flower, hence the name "Reverse Flower Sore." Any malignant sore that fails to heal for a long time may also exhibit foul flesh growing in a reverse flower shape. (From Volume 35)
*Qianjin Fang* (Essential Prescriptions Worth a Thousand Gold) provides a highly effective prescription for treating all kinds of malignant sores that have failed to heal for a long time, including Fan Hua Chuang.
Finely chop and cook until soft the root of *Arctii Fructus* (Niu Bang Zi Gen), mash it well, mix it with lard from the twelfth lunar month (La Yue), and apply it as a plaster to the swollen sore. Continue application until healed. (From Volume 23)
*Bixiao Fang* (Prescriptions of Immediate Effect) for treating Fan Hua Chuang:
Decoct willow branches and leaves in water until a paste resembling thick syrup is formed. Apply this paste to the affected area for good results.
Another prescription:
Burn purslane (*Portulaca oleracea*) to ash and apply it to the lesion. Apply frequently until healed. (Also found in *Qianjin Fang*)
Another prescription:
Apply salt ash to the lesion; this is miraculous. (All from Volume 4)
*Qianjin Fang* treats Yu Qi Chuang (Fish Navel Sore), which resembles a newly cauterized wound from fire needles. The periphery is red, while the center turns blackish, indicating necrosis. It can be pricked with a needle; if there is no pain upon pricking, it indicates a dangerous condition. (Also known as Yu Qi Ding/Fish Navel Carbuncle).
Mix equal parts of ash from fish heads collected in the twelfth lunar month and ash from tangled hair. Blend with thin chicken droppings to form a uniform mixture. Apply this mixture to the sore as a plaster, changing it frequently until healed. This sore may appear insignificant but can be fatal.
Another prescription:
Apply Han Shi Tang (a type of maltose prepared during the Cold Food Festival) to seal the sore. If it hardens, burn it to ash and apply the powder; the sore will heal.
Another prescription for Yu Qi Chuang where the head is white and swollen, causing unbearable pain:
First, prick the head of the sore and its surroundings to create holes. Crush fresh Angelicae Dahuricae Radix (Baizhi) to extract juice and drip it into the holes. If fresh juice is unavailable, use dried Baizhi powder for application. (Alternatively, use Lactuca sativa var. crispa / Bai Ju).
Another prescription (originally noted for Chi Gen Ding Chuang/Red-Root Carbuncle):
Collect soil from moleburrows (Mogera wogura), mix with water to form a mud-like consistency, and apply it as a patch. Replace it when it feels hot until healed.
Another prescription:
Crush horse teeth into powder, mix with lard from the twelfth lunar month, and apply. This helps extract the root and stops pain. Alternatively, burn the horse teeth to ash for use.
Another prescription (originally noted for treating carbuncles contracted by contact):
Prick the head of the sore and its surroundings to allow maximum drainage of pus. Crush raw chestnuts (Castanea mollissima) and apply the yellow pulp to the sore. Surround the sore with a dough ring to prevent leakage. From morning to noon, the root of the carbuncle will likely emerge.
Another prescription (same as above):
Surround the sore with a dough ring as before. Prick the head of the sore and its surroundings randomly with a needle. Boil vinegar in a copper vessel until bubbling, then pour it into the dough ring (capacity about one cup). Replace the vinegar when it cools down. Within three applications, the root will be extracted.
Another prescription (same as above):
Boil snake skin (Ophiopogon japonicus? No, Serpentis Shed Skin/Bieshu) equivalent to the size of an egg in four sheng of water. Boil for three to four cycles, strain the dregs, and drink the decoction for immediate cure. Alternatively, burn the snake skin to ash, mix with egg white, and apply topically for healing. (All from Volume 23)
Cui Shi's prescription for swelling due to Yu Qi Du Chuang (Fish Navel Toxic Sore):
When the sore first appears, the head is white and about the size of a millet seed, with a black center like an ant and red surroundings. After four or five days, the pain becomes unbearable, appearing ulcerated but not fully ruptured.
Another prescription:
Crush together Herba Siegesbeckiae (Qumai) and raw oil, cook until soft, and apply the paste. This is also beneficial. (All from Volume 5)