瘙疹者。儿在胎中。受母血热之气。所蒸已久。及生后外遇凉风以致遍身红点。如栗米之状
。月内见者。名为烂衣疮。百日内见者。又名百日疮。未出痘疮之先见者。即名为瘙疹。调
摄谨慎。不治自愈。
盖痘疹者。谓痘方愈而疹随发也。因痘后余毒未尽。更兼恣意饮食。外感风寒。以致遍身出
疹。色赤作痒。始如栗米。渐成云片。宜加味消毒饮疏风清热疹即愈矣。
加味消毒散
荆芥 防风 粘子 升麻
甘草 赤芍 山楂 连翘
瘾疹者。乃心火灼于肺金。又兼外受风湿而成也。发必多痒。色则红赤。隐隐于皮肤之中。
故名曰瘾疹。先用加味羌活散。疏风散湿。继以加味消毒饮清热解毒。表里清而疹愈矣。
加味羌活散
羌活 前胡 薄荷 防风
川芎 枳壳 桔梗 蝉蜕
连翘 甘草 赤苓
加味消毒饮 见前盖痘疹。
(附采诸家麻后证治)
龟胸者。麻后余毒。留于肺经。阳火熏灼而致也。治宜清肺化痰降火。先用清气化毒饮。或
凉膈散。再加苏子。枳壳。橘红。麦冬。羚羊。地骨皮。葶苈子。枇杷叶等药。以开导其气
。继用九味平胸丸治之。
清气化毒饮（见前）
凉膈散（见前）
九味平胸丸
百合 天冬 杏仁 桑皮 石膏
大黄 葶苈 木通 枳壳
共为末。蜜丸如绿豆大。清汤送下。
瘙疹（一种发于婴儿期的红色皮疹，类似麻疹但较轻）：这是指胎儿在母体中时，受到母亲血分热邪的熏蒸日久。出生后，又外感凉风，导致全身出现红点，形状像粟米一样。如果在出生一个月内出现，称为“烂衣疮”；在一百天内出现，又称“百日疮”；在未出痘疮之前出现的，就称为瘙疹。只要护理谨慎，不需治疗也能自愈。
盖痘疹（痘疮痊愈后随即发出的疹子）：是指痘疮刚刚痊愈，疹子随即发作。这是因为痘后的余毒未尽，再加上饮食不节制，外感风寒，导致全身发出疹子，颜色发红且瘙痒，起初像粟米，逐渐连成片如云状。适宜使用加味消毒饮来疏风清热，疹子即可痊愈。
加味消毒散方剂组成：荆芥、防风、粘子（王不留行或菟丝子等，此处依古籍常指菟丝子或王不留行，保留原名）、升麻、甘草、赤芍、山楂、连翘。
瘾疹（即荨麻疹，皮肤出现红色风团，剧烈瘙痒）：这是由于心火灼伤肺金，又兼受外感风湿所致。发作时必然多痒，颜色红赤，隐隐约约出现在皮肤之中，所以名叫瘾疹。先用加味羌活散来疏风散湿，接着用加味消毒饮清热解毒，表里清利，疹子就会痊愈。
加味羌活散方剂组成：羌活、前胡、薄荷、防风、川芎、枳壳、桔梗、蝉蜕、连翘、甘草、赤苓（赤茯苓）。
加味消毒饮 见前文“盖痘疹”部分。
（附：采集各家关于麻疹后遗症的证治方法）
龟胸（一种小儿胸部畸形，胸骨前突如龟背）：这是麻疹后的余毒，留滞于肺经，阳火熏灼所致。治疗应当清肺化痰、降火。先用清气化毒饮，或者凉膈散，再加苏子、枳壳、橘红、麦冬、羚羊角、地骨皮、葶苈子、枇杷叶等药物，以开导肺气。接着用九味平胸丸治疗。
清气化毒饮（见前文）
凉膈散（见前文）
九味平胸丸方剂组成：百合、天冬、杏仁、桑白皮、石膏、大黄、葶苈子、木通、枳壳。
以上药物共研为细末，用蜂蜜制成如绿豆大小的丸药，用清汤送服。
Yi Zhen (a type of infantile rash similar to measles but milder): This refers to the condition where, while in the womb, the fetus has been long steamed by the heat qi of the mother's blood. After birth, exposure to cool wind externally causes red spots all over the body, resembling millet grains. If seen within one month after birth, it is called "Lan Yi Chuang" (Rotting Clothes Sore); if seen within one hundred days, it is also called "Bai Ri Chuang" (Hundred Days Sore); if seen before the eruption of smallpox, it is named Yi Zhen. With careful nursing, it will heal spontaneously without treatment.
Gai Dou Zhen (Rash following Smallpox): This refers to the eruption of rash immediately after the healing of smallpox. It occurs because the residual toxins from smallpox are not yet exhausted, compounded by indulgent diet and external contraction of wind-cold, leading to rashes all over the body that are red and itchy. Initially resembling millet grains, they gradually merge into cloud-like patches. It is appropriate to use Jia Wei Xiao Du Yin (Modified Detoxification Decoction) to disperse wind and clear heat, at which point the rash will heal.
Jia Wei Xiao San Formula Composition: Jingjie (Schizonepetae Spica), Fangfeng (Saposhnikoviae Radix), Nianzi (Vaccariae Semen or Psoraleae Fructus, retained as original), Shengma (Cimicifugae Rhizoma), Gancao (Glycyrrhizae Radix et Rhizoma), Chishao (Paeoniae Radix Rubra), Shanzha (Crataegi Fructus), Lianqiao (Forsythiae Fructus).
Yin Zhen (Urticaria/Hives): This is caused by Heart fire scorching Lung metal, combined with external contraction of wind-dampness. Upon eruption, there is necessarily intense itching, the color is red, and it appears faintly within the skin, hence the name Yin Zhen. First, use Jia Wei Qiang Huo San (Modified Notopterygii Decoction) to disperse wind and scatter dampness; subsequently, use Jia Wei Xiao Du Yin (Modified Detoxification Decoction) to clear heat and detoxify. When both exterior and interior are cleared, the rash will heal.
Jia Wei Qiang Huo San Formula Composition: Qianghuo (Notopterygii Rhizoma et Radix), Qianhu (Peucedani Radix), Bohe (Menthae Haplocalycis Herba), Fangfeng (Saposhnikoviae Radix), Chuanxiong (Ligustici Chuanxiong Rhizoma), Zhike (Aurantii Fructus Immaturus), Jiegeng (Platycodonis Radix), Chantui (Cicadae Periostracum), Lianqiao (Forsythiae Fructus), Gancao (Glycyrrhizae Radix et Rhizoma), Chiling (Poria Cocos with Red Cortex).
Jia Wei Xiao Du Yin See previous section "Gai Dou Zhen".
(Attached: Treatments for Post-Measles Conditions Collected from Various Experts)
Gui Xiong (Turtle Chest/Pigeon Breast): This is caused by residual toxins from measles remaining in the Lung meridian, steamed and scorched by Yang fire. Treatment should focus on clearing the lungs, resolving phlegm, and descending fire. First, use Qing Qi Hua Du Yin (Clear Qi and Transform Toxin Decoction) or Liang Ge San (Cool the Diaphragm Powder), adding Suzi (Perillae Fructus), Zhike (Aurantii Fructus Immaturus), Juhong (Citri Reticulatae Pericarpium Rubrum), Maidong (Ophiopogonis Tuber), Lingyangjiao (Saigae Tataricae Cornu), Digupi (Lycii Cortex), Tinglizi (Descurainiae Semen seu Lepidii Semen), and Pipaye (Loquat Leaf) etc., to open and guide the qi. Subsequently, treat with Jiu Wei Ping Xiong Wan (Nine-Ingredient Leveling Chest Pill).
Qing Qi Hua Du Yin (See previous)
Liang Ge San (See previous)
Jiu Wei Ping Xiong Wan Formula Composition: Baihe (Lilii Bulbus), Tiandong (Asparagi Tuber), Xingren (Armeniacae Semen Amarum), Sangpi (Mori Cortex), Shigao (Gypsum Fibrosum), Dahuang (Rhei Radix et Rhizoma), Tingli (Descurainiae Semen seu Lepidii Semen), Mutong (Akebiae Caulis), Zhike (Aurantii Fructus Immaturus).
Grind all into powder, make pills the size of mung beans using honey, and take with clear soup.