凡出疹者，多有五六日不饮食，此胃为邪气所侵，亦为邪气所养，故不食亦不妨。切不可着意
治之，只宜治疹，疹疮出尽，毒瓦斯渐解，即思饮食。尤不可与面食，虽用粥饮，每次只可少与，候
气清神爽，身全不热，渐渐加添，但宜少而频也。
凡出疹之先，平昔过用面食者，或正出时吃面食者，成胃气渐开即思面食而用早者，因动胃火
，以致清涕不来，身体作热，两眼看手，咬指抠鼻，撕口唇皮，及撕眼札毛者，此皆疹后食复之病
也，当清肺解毒，加消导之剂治之。
凡患疹之人，不拘大小，自起至收，必皆喜饮凉水。此不必禁，但宜少不宜多，宜顿不宜顿，
则毒瓦斯随之渐解。
凡疹子渴喜饮水，纯是火邪，肺焦胃干，心火内亢故也。初热发渴者，升麻葛根汤加天花粉、
麦门冬；渴甚者，人参白虎汤合黄连解毒汤主之。
凡疹子发热，或自汗，或鼻衄者，不须止之，此亦散越之义。汗者，毒从汗散；衄者，毒从衄
解，但不可太过。如汗太多，人参白虎汤，或合黄连解毒汤；衄太多者，玄参地黄汤。
凡疹有初热而见烦扰谵妄狂乱者，宜升麻葛根汤调辰砂益元散主之。
一、疹收之后，余热未尽，日夜烦躁，谵语狂乱者，辰砂益元散用灯心汤调下，或四苓散加灯草
、黄连、黄芩，调水飞朱砂五分主之。
凡是出疹的患者，大多会有五六天不想吃东西的情况，这是因为胃受到邪气侵袭，同时也依靠邪气来维持（正气与邪气相争），所以暂时不进食也没有妨碍。千万不要刻意去治疗食欲不振的问题，只需要针对疹子本身进行治疗。等到疹疮完全发出，毒气逐渐解除后，患者自然就会想要饮食。尤其不能给患者吃面食，即使使用粥类饮品，每次也只能少量给予，要等到患者气息清爽、精神爽快、身体完全不发热时，再慢慢增加食量，原则是少量且频繁地喂食。
凡是出疹之前，平时就过度食用面食的人，或者在疹子刚发出时就吃面食的人，因为胃气稍微通畅就想吃面食而过早食用者，由于动摇了胃火，导致清涕不出，身体发热，两眼乱看手中的东西，咬手指、抠鼻子，撕扯嘴唇皮，以及撕扯眼睫毛等情况，这些都是疹子后因饮食不当导致的复发疾病，应当采用清肺解毒的方法，并加入消食导滞的药物进行治疗。
凡是患疹子的人，无论年龄大小，从发病初期到收没阶段，一定都喜欢喝凉水。这不必禁止，但应该少喝而不是多喝，应该分次小口喝而不是一次性大量喝，这样毒气就能随之逐渐解除。
凡是出疹的孩子口渴喜欢喝水，完全是因为火邪所致，导致肺部焦枯、胃部干燥、心火内盛亢奋。如果在初热阶段出现口渴，用升麻葛根汤加入天花粉、麦门冬；如果口渴非常严重，用人参白虎汤合黄连解毒汤为主方治疗。
凡是出疹的孩子发热，或者自汗，或者流鼻血的情况，不需要强行止住，这也符合毒邪发散的原理。出汗，是因为毒邪随汗液发散；流鼻血，是因为毒邪随鼻血解除，但不可过于剧烈。如果出汗太多，用人参白虎汤，或者合用黄连解毒汤；如果流鼻血太多，用玄参地黄汤。
凡是疹子处于初热阶段而出现烦躁不安、胡言乱语、狂躁混乱症状的，宜用升麻葛根汤调服辰砂益元散为主方治疗。
一、疹子消退之后，余热未尽，日夜烦躁不安、说胡话、狂躁混乱的，用辰砂益元散配合灯心草汤送服，或者用四苓散加入灯心草、黄连、黄芩，调用水飞朱砂五分（约1.5-2克）为主方治疗。
In cases of exanthema (rash), patients often refuse food for five to six days. This is because the Stomach is invaded by pathogenic factors, yet also sustained by them during the struggle between healthy Qi and pathogens; therefore, temporary anorexia is not detrimental. One must not deliberately treat the lack of appetite, but rather focus on treating the rash itself. Once the exanthema has fully erupted and the toxic heat gradually dissipates, the desire for food will naturally return. It is especially important to avoid giving wheat-based foods (noodles). Even if rice gruel is used, it should be given in small amounts each time. Only when the patient's breath becomes clear, spirit refreshed, and body completely free of fever should the diet be gradually increased, adhering to the principle of small quantities given frequently.
For those who have consumed excessive wheat-based foods prior to the eruption of exanthema, or who ate such foods while the rash was just emerging, the early resumption of these foods due to a slight opening of Stomach Qi can stir up Stomach Fire. This may result in the absence of clear nasal discharge, bodily heat, staring at hands, biting fingers, picking the nose, peeling lip skin, and pulling out eyelashes. These are all conditions of dietary relapse following exanthema. Treatment should involve clearing the Lungs and resolving toxicity, combined with herbs that promote digestion and remove stagnation.
Patients suffering from exanthema, regardless of age, invariably prefer drinking cool water from the onset until resolution. This preference need not be prohibited, but intake should be moderate rather than excessive, and frequent small sips rather than large boluses, allowing the toxic heat to dissipate gradually.
Thirst and a desire to drink water in children with exanthema are entirely due to Fire Pathogens, causing dryness and scorching of the Lungs, dryness of the Stomach, and hyperactivity of Heart Fire. In the initial febrile stage accompanied by thirst, Shengma Gegen Tang (Cimicifugae et Puerariae Decoction) added with Tianhuafen (Trichosanthis Radix) and Maimendong (Ophiopogonis Radix) is indicated. If thirst is severe, Renshen Baihu Tang (Ginseng White Tiger Decoction) combined with Huanglian Jiedu Tang (Coptis Detoxification Decoction) should be administered as the primary formula.
If a child with exanthema experiences fever, spontaneous sweating, or epistaxis (nosebleed), these symptoms need not be forcibly stopped, as they represent the dispersal of pathogens. Sweating allows toxins to disperse through the pores; epistaxis allows toxins to resolve through bleeding. However, this process must not be excessive. If sweating is profuse, Renshen Baihu Tang (Ginseng White Tiger Decoction) or its combination with Huanglian Jiedu Tang (Coptis Detoxification Decoction) is appropriate. If epistaxis is profuse, Xuanshen Dihuang Tang (Scrophulariae et Rehmanniae Decoction) is indicated.
When exanthema is in the initial febrile stage and presents with restlessness, delirium, mania, and confusion, Shengma Gegen Tang (Cimicifugae et Puerariae Decoction) mixed with Chen Sha Yiyuan San (Cinnabar Yi Yuan Powder) is the primary treatment.
I. After the exanthema has subsided, if residual heat remains causing day-and-night irritability, delirious speech, and manic confusion, Chen Sha Yiyuan San (Cinnabar Yi Yuan Powder) should be taken with Dengxin Cao Tang (Juncus Decoction). Alternatively, Siling San (Four-Poria Powder) added with Dengcao (Junci Medulla), Huanglian (Coptidis Rhizoma), and Huangqin (Scutellariae Radix), mixed with 5 fen (approx. 1.5-2g) of Shui Fei Zhusha (Water-triturated Cinnabar), is indicated.