一忌荤腥生冷风寒。夫谷气通，肉气滞。凡是荤腥，俱能滞毒，所以忌也。果生则难克
化，物冷则能冰伏，冰伏不化，毒乃滞留，又当忌也。若风寒闭塞，毛窍不开，则毒瓦斯何由
出乎？此数端者，俱不可犯也。
一忌骤用寒凉。麻虽热症，固不宜用辛热之剂。然初热之际，虚实之症未形，轻重之势
未见，遂骤以苦寒之药而峻攻之。几何不冰伏其毒而不得出，其反至于内攻乎？故善治者，
惟达毒而不郁毒，只解毒而不冰毒也。
一忌误用辛热。麻本热症，若复投辛热之药，是犹火上复加薪也，以火助火。其毒不愈
横乎？然麻症初起之时，亦有四肢厥冷者，然热极似寒之故，切不可妄认虚寒而妄投以热药
也。即遇天时大寒，亦宜置暖室，切不可因严寒而遂投以辛热之物，以济腹中之火也。
一忌误用补涩。毒火之发，最要疏通，尤嫌补涩。盖疏通则毒外泄而解，补涩则毒滞内
留为殃。但初发之时，症多吐泻，愚夫愚妇急欲止之，若误用参、术、砂仁补涩之药，则关
闭塞，毒滞于中，必作内攻之祸矣！
夫痘为阴毒，其势更缓，或死或生，尚判之于成浆之日。麻为阳毒，其热甚烈，若存若
没，早定之于方出之时。故发热三日，麻当现于皮肤。若腠理紧秘，风寒严束，气滞于中，
毒凝于内，不能出现，则毒作内攻，须臾告变。故痘则虑难成浆，麻则惧其不出。麻前痘后
，最为紧要，此古今之通议也。当发热三日之间，急宜观形察色，审声辨症，以为调治之方
。如声重鼻塞，肌粟恶寒，是为风寒所束，宜用加味升麻汤∶升麻、干葛、防风、荆芥、牛
蒡、连翘、桔梗、木通、赤芍、甘草、柴胡、黄芩、陈皮、蝉蜕、元参，加葱白水煎，热服
，令取微汗，一二服间其麻即出。如大热熏蒸，肌肤干燥，目赤唇紫，毛发焦竖，烦渴不安
，惊狂颠谵，二便秘结而出不快者，乃热毒盛壅故也。宜用栀仁解毒汤∶栀子、黄芩、黄连
、石膏、知母、牛蒡、连翘、升麻、柴胡、防风、赤芍、甘草，大便秘加酒大黄，烦躁加麦
冬，嗽甚者加杏仁、桔梗、花粉，惊谵用抱龙丸或牛黄丸，无汗腠理秘加大黄，再用紫苏煎
水令热气熏之，或用酒遍身擦之，然后以被盖片时，其麻即出。治风寒闭者亦如是。若为秽
气所触而出不快，则用沉香、檀香、荆芥烧烟熏之。
又有毒瓦斯本盛，元气又亏而出不快者，宜用人参白虎汤∶台党二钱，石膏四钱，知母一
钱五分，加升麻、防风、牛蒡、炒芩、水煎服。
孟氏治麻方∶石膏二两（ ）、荆芥、地骨皮、桔梗各八钱，赤芍、牛蒡、薄荷、陈皮、
枳壳各六钱，川贝、甘草各四钱，红花三钱，干葛、归尾、桑白皮各一钱，共为末，每服三
钱，开水下。此方能发表透肌、清毒活血、理肺消痰、清胃解结，不拘四时皆可服，诚治麻
之良方也。
One taboo is to avoid consuming meat, raw and cold foods, and exposure to wind-cold. Grain qi flows smoothly, whereas meat qi tends to stagnate. All kinds of meat and fish can cause the retention of pathogenic toxins, hence they are taboo. Raw fruits are difficult to digest, and cold foods can cause "ice-fu" (freezing stagnation). If this freezing stagnation does not resolve, the toxin will remain retained, which is also taboo. If wind-cold blocks the pores and hair follicles do not open, how can the toxic vapors be expelled? These several aspects must not be violated.
The second taboo is the sudden use of cold-cooling medicines. Although measles is a heat syndrome and indeed should not be treated with acrid-warm agents, at the initial stage of fever, when the patterns of deficiency and excess have not yet manifested and the severity has not become apparent, suddenly attacking with bitter-cold drugs will likely cause the toxin to freeze-stagnate and fail to erupt, leading instead to internal attack. Therefore, skilled practitioners only facilitate the flow of the toxin without allowing it to stagnate, and resolve the toxin without freezing it.
The third taboo is the mistaken use of acrid-warm medicines. Measles is fundamentally a heat syndrome; administering acrid-warm drugs is like adding firewood to a fire, using fire to assist fire. Will the toxin not become even more rampant? However, at the onset of measles, there may be cold limbs due to extreme heat mimicking cold. One must not mistakenly diagnose this as deficiency-cold and recklessly administer warm drugs. Even in severe cold weather, one should stay in a warm room and must not immediately administer acrid-warm substances to fuel the fire within the abdomen.
The fourth taboo is the mistaken use of tonifying and astringent medicines. When toxic fire erupts, the most important principle is unblocking and draining; tonifying and astringing are particularly disliked. Unblocking allows the toxin to drain outward and resolve, while tonifying and astringing cause the toxin to stagnate internally and create disaster. At the initial stage, symptoms often include vomiting and diarrhea. Laypeople anxiously seek to stop these symptoms; if they mistakenly use tonifying and astringent herbs such as Codonopsis Radix (Renshen), Atractylodis Rhizoma (Baizhu), and Amomi Fructus (Sharen), the orifices will become blocked, the toxin will stagnate in the middle, and inevitable internal attack disasters will occur!
Smallpox belongs to yin-toxin, its progression is slower, and survival or death is determined when pustules form. Measles belongs to yang-toxin, its heat is fierce, appearing and disappearing, and its outcome is determined early when the rash first emerges. Thus, after three days of fever, the measles rash should appear on the skin. If the couli (skin pores) are tight and closed, and wind-cold binds strictly, causing qi stagnation in the interior and toxin condensation inside, preventing eruption, the toxin will attack inward, and changes will occur instantly. Therefore, smallpox worries about failing to form pustules, while measles fears failure to erupt. The period before measles and after smallpox is of utmost importance, a consensus throughout history. During the three days of fever, one must urgently observe the form and color, examine the voice and differentiate the syndrome, to formulate treatment strategies. If the voice is heavy, nasal congestion occurs, and the skin presents with gooseflesh and aversion to cold, this indicates binding by wind-cold. Use Modified Shengma Decoction: Chuanma Huangqi (Radix Cimicifugae), Gegen (Puerariae Lobatae Radix), Fangfeng (Saposhnikoviae Radix), Jingjie (Perillae Folium), Niubangzi (Arctii Fructus), Lianqiao (Forsythiae Fructus), Jiegeng (Platycodonis Radix), Mutong (Akebiae Caulis), Chishao (Paeoniae Radix Rubra), Gancao (Glycyrrhizae Radix et Rhizoma), Chaihu (Bupleuri Radix), Huangqin (Scutellariae Radix), Chenpi (Citri Reticulatae Pericarpium), Chantui (Cicadae Periostracum), Yuanshen (Scrophulariae Radix), plus Congbai (Allii Fistulosi Bulbus) decocted in water, taken hot to induce slight sweating. After one or two doses, the measles will erupt. If there is intense heat steaming, dry skin, red eyes, purple lips, scorched and erect hair, restlessness, thirst, discomfort, delirium, convulsions, and slow eruption due to constipation of both bowels and urine, this is due to excessive heat-toxin accumulation. Use Zhiren Jiedu Decoction: Zhizi (Gardeniae Fructus), Huangqin (Scutellariae Radix), Huanglian (Coptidis Rhizoma), Shigao (Gypsum Fibrosum), Zhimu (Anemarrhenae Rhizoma), Niubangzi (Arctii Fructus), Lianqiao (Forsythiae Fructus), Shengma (Radix Cimicifugae), Chaihu (Bupleuri Radix), Fangfeng (Saposhnikoviae Radix), Chishao (Paeoniae Radix Rubra), Gancao (Glycyrrhizae Radix et Rhizoma). Add Jiuhuangda (Prepared Rheum Palmatum Radix et Rhizoma) for severe constipation, Maidong (Ophiopogonis Radix) for irritability, Xingren (Armeniacae Semen Amarum) and Jiegeng (Platycodonis Radix) for severe cough, Huafen (Paeoniae Radix Alba) for phlegm-heat, Baolong Wan (Protect Dragon Pill) or Niuhuang Wan (Calculus Bovis Pill) for delirium and convulsions. For anhidrosis and closed couli, add Da Huang (Rhei Radix et Rhizoma), fumigate with Zi Su (Perillae Folium) decoction steam, or rub the body with wine, then cover with a blanket for a short time, and the measles will erupt. Treatment for wind-cold closure is similar. If eruption is hindered by foul air, smoke with Chenxiang (Aquilariae Lignum Resinatum), Tanxiang (Santalum Album Lignum), and Jingjie (Perillae Folium).
In cases where toxic vapors are abundant but yuan qi (original qi) is deficient, leading to slow eruption, use Renshen Baitu Decoction: Taidangshen (Codonopsis Radix) 2 qian, Shigao (Gypsum Fibrosum) 4 qian, Zhimu (Anemarrhenae Rhizoma) 1.5 qian, plus Shengma (Radix Cimicifugae), Fangfeng (Saposhnikoviae Radix), Niubangzi (Arctii Fructus), and fried Huangqin (Scutellariae Radix), decocted in water and taken orally.
Mr. Meng's formula for treating measles: Shigao (Gypsum Fibrosum) 2 liang (crushed), Jingjie (Perillae Folium), Gudupi (Lycii Cortex), Jiegeng (Platycodonis Radix) each 8 qian; Chishao (Paeoniae Radix Rubra), Niubangzi (Arctii Fructus), Bohe (Menthae Haplocalycis Herba), Chenpi (Citri Reticulatae Pericarpium), Zhike (Aurantii Fructus Immaturus) each 6 qian; Chuanbei (Fritillariae Cirrhosae Bulbus), Gancao (Glycyrrhizae Radix et Rhizoma) each 4 qian; Honghua (Carthami Flos) 3 qian; Gegen (Puerariae Lobatae Radix), Guiwei (Angelicae Sinensis Radix), Sangbaipi (Mori Cortex) each 1 qian. Grind all into powder. Take 3 qian per dose, washed down with boiling water. This formula releases the exterior and penetrates the muscle, clears toxicity and invigorates blood, regulates the lungs and resolves phlegm, clears the stomach and resolves knots. It can be taken in any season and is indeed an excellent formula for treating measles.