麻疹治法易明，若夹痧胀不放不刮，或犯痧胀之禁，麻疹亦随痧胀，反攻脏腑，蛔不能存，非吐而出，即从大便而
下，否则，结于大肠，脐中作痛。治宜先施刮放，后用芒硝、大黄，攻其死蛔宿粪，令毒从大便而出，则痧胀乃解。麻
疹轻者自消，重者自发矣。
治验∶
一刘香仲孙女，二月间，伤风发热咳嗽，麻疹隐现不发，喉哑失音，脐腹疼痛，昏闷沉沉，前医不治。延余，左脉
芤，右脉涩，时有歇指。以火照手背指上痧筋，放二十余针。用沉香丸清茶稍冷冻饮料之，付紫朴汤合荆芥银花汤俱微冷冻饮料
之，后连放指头痧二次。如前药，加黄芩、石膏、芒硝、大黄微温饮之，喉稍有声，乃去石膏加黄柏温饮之，下死蛔四
条，大便通而愈。
一刘姓婢，犯麻疹，发热咳嗽腹痛，脉洪大无伦，亦夹痧胀者也。放腿弯痧五针，紫黑毒血成流，又放指头痧二十
余针。用桃仁红花汤减苏木合荆芥汤减川芎加黄芩，微冷冻饮料之，下蛔二条而痊。
一过洪甫，发热咳嗽吐泻，麻疹现而复隐，口渴唇焦，鼻红泻血，舌有黄胎，绕脐硬痛，叫喊非常，医治不应。其
弟德甫延余治之，左脉俱伏，右脉洪紧，放指头臂上痧三十余针，用独活红花汤加石膏、黄芩、芒硝微冷冻饮料二剂，泻下
宿粪，死蛔六条，麻疹乃发。次用荆芥银花汤加玄参、黄芩、黄柏微温饮之，三剂而愈。
一方原行次子，伤寒发热，咳嗽烦闷，腹中大痛，麻疹现而复隐，喉哑失音，六脉弦紧，放乳上，指臂痧二十余针，
未愈。用射干兜苓汤减甘菊、花粉加石膏、桃仁、红花、大黄二剂，微冷冻饮料之。下宿粪、死蛔三条，麻疹始透。复放腿
弯痧，腹痛余症俱瘳。
The treatment principles for measles are relatively straightforward. However, if complicated by *shazhang* (Sha-zhang: a condition characterized by acute abdominal pain and distension due to pathogenic Sha toxin) and not treated with scraping (*guasha*) or bloodletting, or if the contraindications of *shazhang* are violated, the measles pathogen may follow the *shazhang* trend and attack the Zang-Fu organs retroactively. Ascaris lumbricoides (roundworms) cannot survive in this environment; they will either be vomited out or passed through the stool. Otherwise, they may accumulate in the large intestine, causing pain around the umbilicus. The treatment should first employ scraping and bloodletting, followed by the administration of Mangxiao (Natrii Sulfas) and Dahuang (Rhei Radix et Rhizoma) to purge dead worms and accumulated feces, allowing the toxin to exit via the stool, thereby resolving the *shazhang*. Mild cases of measles will resolve spontaneously, while severe cases will manifest fully.
Clinical Cases:
1. A granddaughter of Liu Xiangzhong, in February, suffered from wind-strike with fever and cough. Measles appeared faintly but failed to erupt. She had hoarseness leading to aphonia, abdominal pain, and a state of mental confusion and heaviness. Previous physicians failed to cure her. Upon my consultation, her left pulse was Kou (hollow like a scallion stem), and her right pulse was Se (rough and choppy), with intermittent pauses. Using fire to illuminate the Sha veins on the back of the hand and fingers, I performed bloodletting with more than twenty needles. She was given Chenxiang Wan (Aucklandia Pill) taken with clear tea, slightly chilled before drinking. Additionally, Zipu Tang (Purple Magnolia Bark Decoction) combined with Jingjie Yinhua Tang (Schizonepeta and Honeysuckle Decoction) was administered, also slightly chilled. Subsequently, bloodletting was performed twice more on the fingertips. Following the previous prescription, Huangqin (Scutellariae Radix), Shigao (Gypsum Fibrosum), Mangxiao, and Dahuang were added, and it was taken warm. Her voice improved slightly, so Shigao was removed and Huangbai (Phellodendri Cortex) was added, taken warm. Four dead ascarids were passed, and she recovered after bowel movements normalized.
2. A maid surnamed Liu contracted measles, presenting with fever, cough, and abdominal pain. Her pulse was excessively Hongda (surging and large), indicating a complication with *shazhang*. Bloodletting was performed at five points on the popliteal fossa, releasing dark purple toxic blood flowing in streams. Another twenty-plus needle pricks were made on the fingertips. Taoren Honghua Tang (Peach Kernel and Safflower Decoction) with Sumu (Calamus Wood) removed, combined with Jingjie Tang (Schizonepeta Decoction) with Chuanxiong (Ligustici Chuanxiong Rhizoma) removed, plus Huangqin, was administered slightly chilled. Two ascarids were passed, and she recovered.
3. Guo Hongfu presented with fever, cough, vomiting, and diarrhea. Measles appeared and then disappeared again. He complained of thirst, scorched lips, epistaxis, hematochezia, a yellow tongue coating, and hard, painful tenderness around the umbilicus, accompanied by loud screaming. Medical treatment was ineffective. His brother, Guo Defu, invited me to treat him. His left pulses were all Fu (deep and hidden), and his right pulses were Hongjin (surging and tight). Bloodletting was performed on the fingers and arms with over thirty needles. Duhuo Honghua Tang (Angelicae Pubescentis and Safflower Decoction) with Shigao, Huangqin, and Mangxiao added was administered slightly chilled for two doses. This resulted in the passage of accumulated feces and six dead ascarids, allowing the measles to erupt subsequently. Then, Jingjie Yinhua Tang with Xuanshen (Scrophulariae Radix), Huangqin, and Huangbai added was taken warm for three doses, leading to recovery.
4. The second son of Fang Yuanxing suffered from Shanghan (Cold Damage) with fever, cough, restlessness, and severe abdominal pain. Measles appeared and then vanished. He had hoarseness and aphonia, and his six pulses were Xianjin (wiry and tight). Bloodletting was performed on the upper breast area, fingers, and arms with over twenty needles, but he did not improve. Shegan Douling Tang (Belamcanda and Coptis Decoction) with Ganju (Chrysanthemi Flos) and Huafen (Trichosanthis Radix) removed, plus Shigao, Taoren, Honghua, and Dahuang added, was administered for two doses, slightly chilled. This led to the passage of accumulated feces and three dead ascarids, allowing the measles to finally emerge. Bloodletting was performed again on the popliteal fossa, and the remaining symptoms, including abdominal pain, completely resolved.