大便秘结，庸医以为宜投大黄，二次仍不能通，但此症非泻不能回生矣，速进济川煎，内加肉苁蓉、枳
壳、牛膝，以泄大便秘结。又加升麻五六分之数，随用大黄七八钱之，则顷刻黑粪先
出，而后大便通泄即安矣。故用升麻一提则清气上升，用大黄一泻则浊气下降也。
疹后，身瘦潮热而胃口欲食，甫食则饱，饱过即饥，而肚大痛，大小便利，口臭而身发疥，此乃误服热
药大八味故耳。如一月间，先宜石膏、条芩一大剂，次服熟地、百部、枳壳、沙参、
知母、山栀、天冬、黄芩、谷芽二大剂，则愈矣。又服六味，方
内去萸肉，加当归、防风、麦门冬、沙参等分，可以收功。
疹后遍身流水，日夜发厥，此以疮疥溃烂之故。如四十日外，可服六味，重熟地，去萸肉加蒺藜、
荆芥、丹参、沙参、二冬、漏芦、苦参等分，煎服可以收功。
疹子初发热时，忌用麦冬、生地，恐其清肺而敛邪也。发散不出，忌用人参、黄 、白术、恐其补
气而发喘也。忌用诸热药，恐其助火而伤肺也。切忌鸡、鱼、虾、鸭，四十九日内，食
之必然重出，食鸡子多令儿眼白，食糖多令儿牙疳，食酸碱物均害肺。如泄泻太过，以加味四苓散与之，
切忌诃子、豆蔻、参、 补涩之药，即生甘亦不宜多用。
疹有出没，治分升降，且如壮热腮红便服升麻，面毒神慢宜用紫苏、葱头，气粗热壅，心烦便涩，
即须和解。喘呼咳嗽，眼封肌燥，急宜疏散。未出之前，遵斯而用，再思回后，别有奇
方，发不透而毒邪内蕴，当识内外分消之妙，回速而黑赤枯焦须用清凉解毒，气喘而肚膨胀，声哑喉痛，
不食二便不通，身热燎人，解毒降痰并用。立此二方乃治疹之良规，后之学人慎勿妄图。
Constipation: Quacks may deem it appropriate to administer Rhubarb Decoction (Dahuang), but even after two doses, the bowels remain unopened. However, this condition cannot be saved merely by purgation. One should rapidly administer Jichuan Jian (Ji Chuan Decoction) with added Cistanche Herba (Roucongrong), Aurantium Fructus (Zhiqiao), and Achyranthes Radix (Niuxi) to relieve severe constipation. Additionally, add a small amount of Cimicifugae Rhizoma (Shengma, 5-6 fen) alongside a larger dose of Rheum Palmatum Root and Rhizome (Dahuang, 7-8 qian). Within moments, dark feces will be expelled first, followed by the passage of stool, bringing relief. This is because Shengma lifts clear Yang upward, while Dahuang purges turbid Yin downward.
After the eruption of measles/rash, the patient presents with emaciation, tidal fever, and an appetite. Upon eating, they feel full quickly; after feeling full, hunger returns rapidly. They suffer from abdominal distension and pain, yet bowel and bladder movements are normal. There is foul breath and skin eruptions resembling sores. This results from the erroneous administration of Reheat-inducing Da Ba Wei Wan (Eight-Ingredient Pill). If treated within a month, initially administer a large dose of Gypsum Fibrosum (Shigao) and Scutellariae Radix (Huangqin). Subsequently, administer two large doses of a formula containing Rehmanniae Radix Praeparata (Shudihuang), Stemonae Radix (Baibu), Aurantium Fructus (Zhiqiao), Glehniae Radix (Shashen), Anemarrhenae Rhizoma (Zhimu), Gardeniae Fructus (Shanzhi), Asparagi Radix (Tiangdong), Scutellariae Radix (Huangqin), and Coicis Semen Germinatum (Guya). The condition will then resolve. Finally, administer Liuwei Dihuang Wan (Six-Ingredient Rehmannia Pill), removing Cornus Officinalis Fruit (Yurou), and adding equal parts of Angelicae Sinensis Radix (Danggui), Saposhnikoviae Radix (Fangfeng), Ophiopogonis Radix (Mendong), and Glehniae Radix (Shashen) to complete the treatment.
Post-rash, fluid oozes over the entire body, accompanied by daily or nightly syncope (Jue). This is due to the ulceration of sores. After forty days, one may administer Liuwei Dihuang Wan (Six-Ingredient Rehmannia Pill), increasing the dosage of Rehmanniae Radix Praeparata (Shudihuang), removing Cornus Officinalis Fruit (Yurou), and adding equal parts of Tribuli Fructus (Jili), Schizonepetae Herba (Jingjie), Salviae Miltiorrhizae Radix (Danshen), Glehniae Radix (Shashen), Asparagi Radix (Tiandong), Ophiopogonis Radix (Mendong), Euphorbiae Humifusae Herba (Loulou), and Sophorae Flavescentis Radix (Kushen). Decoct and take orally to achieve recovery.
When the rash first begins to manifest with fever, avoid using Ophiopogonis Radix (Maidong) and Rehmanniae Radix (Shengdi), lest they clear the Lung and trap the pathogenic factor. If the pathogen fails to disperse, avoid using Ginseng Radix (Renshen), Astragali Membranacei Radix (Huangqi), and Atractylodis Macrocephalae Rhizoma (Baizhu), lest tonifying Qi induce asthma. Avoid all heat-inducing herbs, lest they assist fire and damage the Lung. Strictly avoid chicken, fish, shrimp, and duck for forty-nine days; consumption will inevitably cause relapse. Excessive consumption of eggs causes whitening of the sclera in children; excessive sugar intake leads to noma (gangrenous stomatitis); acidic or alkaline substances harm the Lung. If diarrhea is excessive, administer Jiawei Siling San (Modified Four-Ling Powder). Strictly avoid astringents like Terminalia Chebula Fruit (Hezi) and Arecae Semen (Doukou), as well as tonics like Renshen and Baizhu. Even Raw Glycyrrhizae Radix et Rhizoma (Shenggancao) should not be used excessively.
The emergence and disappearance of rashes require treatments that either lift or descend. For instance, with high fever and red cheeks, Cimicifugae Rhizoma (Shengma) may be taken directly. For facial toxicity with lethargy, Perillae Folium (Zisu) and Allii Fistulosi Bulbus (Congtou) are suitable. With coarse breathing, heat congestion, irritability, and difficult urination, harmonization is required. For wheezing, coughing, closed eyes, and dry skin, urgent dispersal is needed. Before the rash appears, follow these principles. After the rash recedes, there are other unique formulas. If the rash does not fully emerge and toxic pathogens accumulate internally, one must understand the subtlety of internal and external dispersion. If the rash recedes rapidly with black-red, withered, and scorched appearance, cooling and detoxification are necessary. For asthma with abdominal distension, hoarseness, sore throat, anorexia, and obstruction of both bowels and bladder, with body heat burning like fire, detoxification and phlegm-resolving methods must be combined. These two principles constitute excellent guidelines for treating rashes; future practitioners must not treat recklessly.