疔毒恶肿∶生乌头切片，醋熬成膏，摊贴。次日根出。又方∶两头尖一两，巴豆四个捣
贴。疔自拔出。（《普济方》）
疔疮发背∶草乌头（去皮）为末，用葱白连须和捣，丸豌豆大，以雄黄为衣。每服一丸，
先将葱一根细嚼，以热酒送下。或有恶心呕三、四口，用冷水一口止之。即卧，以被浓盖，
汗出为度。亦治头风。（《乾坤秘韫》）恶毒诸疮，及发背、疔疮、便毒等证∶二乌膏∶用草
乌头、川乌头，于瓦上以井华水磨汁涂之。如有口，即涂四边。干再上。亦可单用草乌磨醋
涂之。
（《永类方》）大风癣疮，遍身黑色，肌体麻木，痹痛不常∶草乌头一斤，刮洗去皮极净，摊
干。以清油四两，盐四两，同入铫内，炒令深黄色。倾出剩油，只留盐并药再炒，令黑烟出
为度。取一枚擘破，心内如米一点白者始好，白多再炒。乘热杵罗为末，醋面糊丸梧子大。
每服三十丸，空心温酒下。草乌性毒难制，五七日间，以黑豆煮粥食解其毒。（继洪《澹寮
方》）遍身生疮，阴囊两脚尤甚者∶草乌一两（盐一两，化水浸一夜，炒赤为末），猪
Malignant carbuncles and severe swellings: Slice fresh Aconiti Radix (Caowu) and boil it in vinegar to form a paste. Apply the paste to the affected area. The root of the toxin will be expelled the next day. Another prescription: Take one tael of Liangtoujian (Aconitum carmichaelii lateral root processed with other herbs) and four crushed Crotonis Fructus (Badou), then apply them topically. The carbuncle will fall off spontaneously. (From *Puji Fang*)
Carbuncles and back abscesses: Grind processed Aconiti Lateralis Radix Praeparata (Caowutou, peeled) into powder. Mix with scallion whites including roots, pound into a paste, and shape into pills the size of pea seeds. Coat these pills with Realgar powder. Take one pill per dose. First, chew thoroughly on one scallion stalk, then swallow with hot wine. If nausea or vomiting occurs three or four times, stop it by taking a mouthful of cold water. Then lie down and cover yourself tightly with thick blankets until sweating occurs. This method is also effective for treating cephalalgia due to wind-cold. (From *Qiankun Mi Yun*)
Various malignant sores, as well as back abscesses, carbuncles, and buboes: Erwu Gao (Two Wus Paste): Grind Caowutou (Aconiti Lateralis Radix Praeparata) and Chuanwutou (Aconiti Radix) on a tile using well-water to extract juice. Apply this juice to the lesion. If there is an open wound, apply around the edges. Reapply when dry. Alternatively, grind Caowutou with vinegar and apply topically alone. (From *Yonglei Fang*)
Severe leprosy-like tinea with blackening of the whole body, numbness of muscles and skin, and intermittent bi-syndrome pain: Take one jin of Caowutou. Scrape clean, remove skin thoroughly, and air-dry. Add four liang of refined sesame oil and four liang of salt into a wok. Stir-fry until deep yellow. Pour out excess oil, retaining only the salt and herbs. Continue stir-frying until black smoke appears. Break open one pill; it is ideal if there is a small white spot like a rice grain in the center. If too much white remains, stir-fry again. While hot, pound and sieve into powder. Use vinegar and wheat flour paste to make pills the size of Chinese quince seeds. Take thirty pills per dose on an empty stomach with warm wine. Since Caowu is highly toxic and difficult to control, consume porridge made with black soybeans within five to seven days to detoxify. (From Ji Hong's *Danliao Fang*)
Sores all over the body, especially severe on the scrotum and legs: Take one tael of Caowutou (processed with one tael of salt dissolved in water, soaked overnight, stir-fried red, and ground into powder), pig...