孕妇出疹，当以四物加减而加条芩、艾叶，以安胎清热为主，胎不动而麻自愈矣。
然热毒蒸胎，胎多受伤，但胎虽伤而母实无恙也。盖疹与痘不同，痘宜内实，以痘当从
外解，故胎落而母亡，疹宜内虚，以疹当从内解，故胎落而母存，虽然，与其胎去而母
存，孰若子母两全之为愈也。且古人徒知清热以安胎，不思疹未出，而即以清热为事，
则疹难出而内热愈深，是欲保胎，反足以伤胎也，宜清扬表散则疹出而热自清，继以滋
阴清解，则于疹于胎，两得无碍，不安胎而胎自安矣。且艾果、砂仁，性温而香，肺气
大伤之后，复当香燥之药，咳嗽喘促，皆能动胎，水涸金枯，何能长养，徒存安胎之
名，确有损胎之实，张不敢遵贤之成法而害后人之生命也。
人未疹而先有他症者，谓相夹疹而变他症者，谓相传病家，畏其相夹，医家畏其相
传，何也？盖如惊风等症，一遇发疹，并所夹之症亦愈者。所谓由内达外，六气相乘，
其毒同比而解也。每有疹毒未透，疏解未清，调理失宜，变为他症而致危困者。所谓由表入
里，毒滞于内也。疹后其宜慎乎
凡发热之时而遍身汗出者，此毒从汗散，玄府开而疹易出也。若鼻中出血者，此
毒从衄解，俱不可止之，皆得发散之义也。惟汗出太多，血出不止者，此火毒逼迫太
过，致液妄流而血妄行也，宜以归、芍、芩、连、生地、浮小麦之类，以止其汗，或
人参白虎汤、黄连解毒汤主之，更以茅花、归头、生地、甘草、丹皮、玄参、粘子、连
翘之类，以止其血，或玄参地黄汤主之。迟则汗多而元气虚，血多而精神散，变成坏症矣。
孕妇出疹，应当在四物汤的基础上进行加减，并加入黄芩、艾叶，以安胎和清热为主要治疗原则。如果胎气没有受到惊动，麻疹自然会痊愈。
然而，热毒熏蒸会影响胎儿，胎儿大多会受伤。只是虽然胎儿受损，但母亲通常安然无恙。这是因为麻疹与痘疮不同：痘疮适宜让体内正气充实，因为痘毒应当从外部解除，所以往往出现胎落而母亡的情况；麻疹适宜让体内保持相对空虚（指不宜过早使用滋腻或固涩药物），因为疹毒应当从内部透发解除，所以往往出现胎落而母存的情况。尽管如此，与其失去胎儿而保全母亲，不如母子双全那样更好。
况且古人只知道通过清热来安胎，却不思考在麻疹尚未发出时，就急于使用清热的方法，这样会导致麻疹难以透出，体内的热邪反而更深重。这是想要保护胎儿，反而足以伤害胎儿。应当采用清轻宣散表邪的方法，使麻疹透出，热邪自然清除；随后再用滋阴清解的方法，这样对于麻疹和胎儿都不会造成妨碍，不需要刻意安胎，胎儿自然安稳。
此外，艾叶和砂仁性温且气味芳香，在肺气已经严重受损之后，如果再使用香燥的药物，咳嗽气喘等症状都会扰动胎气。此时如同水源枯竭、金（肺）干枯，如何能滋养胎儿？这徒有安胎的名声，却确有损胎的实质。我不敢遵循前贤的成法而危害后人的生命安全。
人在出疹之前先出现其他症状的，称为“相夹疹”（麻疹夹杂其他病症）；转变为其他病症的，称为“相传病”（麻疹传变引起的疾病）。家属害怕“相夹”，医生害怕“相传”，为什么呢？大概像惊风等病症，一旦遇到发疹，所夹杂的病症也会随之痊愈。这叫做由内达外，六气相互影响，其毒邪一同被解除。也有许多情况是疹毒未能透发，疏解不够彻底，调理不当，转变为其他病症而导致危重困顿的。这叫做由表入里，毒邪滞留于体内。所以在出疹期间，必须谨慎小心。
凡是发热的时候全身出汗的，这是毒邪随汗液发散，腠理（玄府）开放，疹子容易发出的表现。如果鼻中出血的，这是毒邪随鼻衄（鼻出血）解除，这两种情况都符合发散的原理，都不可以强行止住。只有当出汗过多、出血不止时，这是火毒逼迫太过，导致津液妄泄而血液妄行。应当使用当归、白芍、黄芩、黄连、生地黄、浮小麦之类的药物，来止住汗液；或者用人参白虎汤、黄连解毒汤为主方。再用茅花、当归头、生地黄、甘草、牡丹皮、玄参、牛蒡子、连翘之类的药物，来止住出血；或者用玄参地黄汤为主方。如果延误时机，汗多会导致元气虚弱，血多会导致精神涣散，从而变成坏证（难治之症）。
When a pregnant woman develops measles (Rash Disease), the treatment should be based on Siwu Tang (Four Substances Decoction) with modifications, adding Huangqin (Scutellariae Radix) and Aiyè (Artemisiae Argyi Folium). The primary principles are to calm the fetus and clear heat. If the fetal qi remains undisturbed, the measles will resolve spontaneously.
However, steaming heat toxins often injure the fetus. Although the fetus may be injured, the mother usually remains unharmed. This is because measles differ from smallpox: for smallpox, it is advisable to strengthen the interior, as the smallpox toxin resolves from the exterior; consequently, if the fetus falls, the mother may die. For measles, it is advisable to keep the interior relatively empty (referring to avoiding premature use of cloying or astringent herbs), as the measles toxin resolves from within; consequently, if the fetus falls, the mother survives. Nevertheless, rather than losing the fetus while saving the mother, it is far better for both mother and child to survive.
Moreover, ancients only knew to clear heat to calm the fetus, failing to consider that if heat-clearing methods are employed before the measles have erupted, the rash will struggle to emerge, and internal heat will deepen. This desire to protect the fetus ends up harming it. One should employ light, clearing, and dispersing methods to release the exterior, allowing the measles to erupt so that heat clears naturally. Subsequently, using yin-nourishing and heat-clearing methods ensures no harm to either the measles or the fetus; thus, without deliberately calming the fetus, the fetus remains secure.
Furthermore, Aiyè (Artemisiae Argyi Folium) and Sharen (Amomi Fructus Rotundus) are warm in nature and aromatic. After the lung qi has been severely damaged, administering such aromatic and drying herbs can trigger coughing and wheezing, which disturb the fetus. In a state where fluids are depleted and metal (lung) is dry, how can nourishment occur? This approach bears only the name of calming the fetus but has the reality of damaging it. I dare not follow these established methods of sages, lest I endanger the lives of future patients.
If other symptoms appear before the onset of measles, it is termed "Xiangjia Zhen" (Measles complicated by other conditions); if the condition transforms into other diseases, it is termed "Xiangchuan Bing" (Measles transmission disease). Families fear complication, and physicians fear transmission. Why? Generally, conditions like convulsions (Jingfeng) resolve along with the eruption of measles. This is described as moving from interior to exterior, where the six qi interact, and the toxins are resolved together. Conversely, if the measles toxin fails to penetrate, dispersion is incomplete, and management is improper, it may transform into other conditions leading to critical distress. This is described as moving from exterior to interior, with toxins stagnating within. Therefore, caution is essential during measles.
When sweating occurs all over the body during fever, this indicates that toxins are dispersing through sweat, the pores (Xuanfu) are open, and the rash emerges easily. If epistaxis (nosebleed) occurs, this indicates that toxins are resolving through bleeding. Both scenarios align with the principle of dispersion and should not be forcibly stopped. However, if sweating is excessive or bleeding does not stop, this is due to excessive fire-toxin forcing fluids to leak and blood to flow recklessly. One should use herbs such as Danggui (Angelicae Sinensis Radix), Baishao (Paeoniae Radix Alba), Huangqin (Scutellariae Radix), Huanglian (Coptidis Rhizoma), Shengdihuang (Rehmanniae Radix Recens), and Fuxiaomai (Tritici Levis Fructus) to stop sweating, or primarily administer Renshen Baihu Tang (Ginseng White Tiger Decoction) or Huanglian Jiedu Tang (Coptis Detoxification Decoction). To stop bleeding, one may use Maohua (Spatholobi Caulis tip/infusion), Danggui Tou (Danggui head), Shengdihuang, Gancao (Glycyrrhizae Radix et Rhizoma), Mudanpi (Moutan Cortex), Xuanshen (Scrophulariae Radix), Niubangzi (Arctii Fructus), and Lianqiao (Forsythiae Fructus), or primarily use Xuanshen Dihuang Tang (Scrophularia and Rehmannia Decoction). Delaying treatment results in excessive sweating depleting yuan qi and excessive blood loss scattering spirit, leading to severe complications.