总括 小儿气弱肌肤薄，热毒乘虚来发作；急须退热与消风，毒散风消自安乐。
《内经》曰∶赤紫丹瘤，皆心火内郁而发。赤如丹砂，故名丹毒。盖心主血，热为血之媒，谓应火而色赤也，乃心
家血热盛以动之，是以游走遍体。其乳母过食酒面煎炒之物，或烘衣着儿，不候冷而着亦成此疾。自腹生出四肢者易治，
自四肢生入腹者难疗。当急令人随患处遍吮毒血，各聚一处砭出之，急服解毒散加紫草茸，外用白玉散敷之。惟百日内
忌砭，以其肌肉难任也。大抵治小儿丹毒，必先服表药，内解热毒，方可涂散，恐毒无所泄，入里为患耳。
惊丹者，小儿百日之内、半岁以上，忽两眼胞红晕微起，面带青黯色，向夜烦啼，或脸如胭脂，此伏热在内。亦有
脸不红者，始则居胎之时，母受重惊，邪伤胎气递相传袭。降生之后，复受热毒，或再有惊有热，热气内蕴，形之于外，
初时散生满面，状如水痘，脚微红而不壮热，出没休息无定，次到颈项赤如丹砂，名曰惊丹。以四圣散先洗其目，次用
百解散，以解惊热。丹毒甚则以四物汤加黄芩之类。如惊丹发至胸膈乳间，微有痰嗽作搐，急宜宣热拔毒，免至内流，
为害不浅，以五和汤加生地、升麻、灯心之类。如此调治，不生他症，投万安饮主之。
有身上发时，亦如前症，不甚燥痒，但见出浮于遍体，神昏不悦，名阴湿毒症，此二症不问赤白，若入腹多致为害，
不可轻视为常耳。
（砭法∶治丹毒色赤游走不定，令口吮毒血聚一处，用细瓷器击碎，取有锋者，以箸头劈开夹之，用线缚定，两指
轻撮箸，稍令瓷芒，在聚血处再用一箸频击，刺出毒血，轻者止用口吮出毒，用药敷之。如患在头者不用砭法，止用针
侧卧挑患处，以出毒血，迟则入腹难起矣。）
〔附方〕
解毒散 牛蒡子 甘草 荆芥 防风 犀角
白玉散 滑石 寒水石（各三钱五分）
四圣散 黄连 秦皮 木贼 灯心
百解散 见热症内。
四物汤 见痢疾症内。
五和汤 见诸疮症内。
万安饮 人参 当归 黄 防风 柴胡 枳壳 半夏 芍药 黄芩 甘草
狗癣疥方 用松柏节劈开，鸡卵取油，片席一块如碗大，剪洞一个如手大，以松节放在洞边，将末香放在松节
上取油。
总括：小儿元气虚弱，肌肤薄弱，热毒乘虚侵袭而发作；必须立即退热并疏散风邪，待毒散风消后自然安宁。
《黄帝内经》说：赤紫色的丹瘤，都是心火在内郁结而引发的。颜色红得像丹砂，所以称为丹毒。因为心主血脉，热是血液的媒介，对应火行而呈现红色，这是心家血热旺盛而发动所致，所以皮疹会游走遍布全身。如果乳母过量食用酒、面食及煎炒燥热之物，或者用烘烤过的衣物包裹婴儿，不待冷却就穿上，也会形成这种疾病。从腹部生出并向四肢蔓延的容易治疗，从四肢生出并向腹部蔓延的难以治愈。应当立即让人在患处周围吮吸毒血，使其聚集在一处后用砭石刺破排出，急服解毒散并加入紫草茸，外用白玉散敷贴。只有出生一百天内的婴儿禁止使用砭法，因为其肌肉难以承受。大抵治疗小儿丹毒，必须先服用解表药，从内部解除热毒，然后才可以涂抹散剂，恐怕毒邪没有出路，反而内陷造成祸患。
惊丹：小儿在百日之内或半岁以上，突然两眼眼睑红肿微起，面色带青暗色，入夜烦躁啼哭，或者脸部像胭脂一样红，这是伏热在内。也有脸部不发红的，起初是因为在母体胎中时，母亲遭受重大惊吓，邪气损伤胎气并传递传染给胎儿。出生后，又感受热毒，或者再次受到惊吓和热邪，热气内蕴，表现于外，初起时散布生满面部，形状像水痘，脚部微红但不壮热，出没无常，随后颈部出现赤红如丹砂的症状，名叫惊丹。先用四圣散清洗眼睛，再用百解散来解除惊热。如果丹毒严重，则用四物汤加黄芩等药物。如果惊丹发展到胸膈和乳房之间，伴有轻微痰嗽和抽搐，应立即宣散热邪、拔除毒邪，避免毒邪内流，否则危害不小，可用五和汤加生地、升麻、灯心草等药物。这样调治，不会引发其他病症，以投万安饮为主进行治疗。
身上发疹的情况，也如同上述症状，不太干燥瘙痒，只是看到皮疹浮泛遍体，神志昏沉不悦，名叫阴湿毒症，这两种病症不论赤白，如果毒邪入腹大多会导致危害，不可轻视视为平常。
（砭法：治疗丹毒颜色赤红且游走不定，让口吮吸毒血聚集在一处，用细瓷器击碎，取有锋刃的部分，用筷子头劈开夹住，用线绑紧，两指轻捏筷子，稍微露出瓷芒，在聚血处再用一根筷子频繁敲击，刺出毒血，病情轻的只用口吮出毒血，用药敷贴。如果患处头部，不使用砭法，只用针侧卧挑刺患处，以排出毒血，拖延则毒邪入腹难治了。）
〔附方〕
解毒散：牛蒡子、甘草、荆芥、防风、犀角。
白玉散：滑石、寒水石（各三钱五分）。
四圣散：黄连、秦皮、木贼、灯心。
百解散：见热症章节。
四物汤：见痢疾症章节。
五和汤：见诸疮症章节。
万安饮：人参、当归、黄芪、防风、柴胡、枳壳、半夏、芍药、黄芩、甘草。
狗癣疥方：用松柏节劈开，鸡卵取油，取一块席片如碗大小，剪一个如手大的洞，将松节放在洞边，将末香放在松节上取油。
General Summary: Infants have weak Qi and thin skin; heat-toxins invade due to deficiency and manifest. It is urgent to clear heat and dissipate wind; once the toxin disperses and wind vanishes, peace will naturally return.
The *Huangdi Neijing* (Yellow Emperor's Inner Canon) states: Red and purple Dan liu (erysipelas-like tumors) all arise from internal stagnation of Heart Fire. The color is red like cinnabar, hence named Dan du (erysipelas). Since the Heart governs blood vessels, heat acts as a medium for blood, corresponding to the Fire element which manifests as red. This is caused by excessive heat in the Heart's blood, leading to wandering rashes across the body. If the wet nurse consumes excessive alcohol, wheat products, and fried or roasted foods, or if clothes heated by fire are used to wrap the infant without cooling down first, this disease can also occur. Cases originating from the abdomen and spreading to the limbs are easy to treat; those originating from the limbs and spreading inward to the abdomen are difficult to cure. One should immediately have someone suck the toxic blood around the affected area until it gathers in one spot, then pierce it with a Bian stone (bloodletting stone) to drain it. Urgently administer Jiedu San (Detoxification Powder) with added Zicao Rong (Radix Lithospermi), and apply external Baiyu San (White Jade Powder). For infants within 100 days of birth, Bian therapy is contraindicated because their muscles cannot withstand it. Generally, treating infant Dan du requires first administering exterior-releasing formulas to internally resolve heat-toxins before applying topical powders; otherwise, the toxin may lack an outlet and penetrate inward, causing harm.
Jing Dan (Startle Erysipelas): In infants under 100 days or over six months, sudden redness and slight swelling of the eyelids appear, accompanied by a bluish-dark complexion, irritability, and crying at night, or a face red as rouge, indicating latent heat inside. Some cases do not show facial redness; initially, during gestation, the mother suffered severe fright, damaging fetal Qi through transmission. After birth, exposure to heat-toxins or further fright and heat causes internal accumulation of heat, manifesting externally. Initially, scattered lesions cover the face, resembling chickenpox, with slightly red extremities but no high fever, appearing and disappearing irregularly. Subsequently, the neck becomes red as cinnabar, named Jing Dan. First wash the eyes with Sisheng San (Four Sages Powder), then use Bairen San (Hundred-Dispersion Powder) to resolve startle and heat. If Dan du is severe, use Siwu Tang (Four Substance Decoction) with Huangqin (Scutellariae Radix). If Jing Dan spreads to the chest, diaphragm, and breast area, accompanied by slight phlegm-cough and convulsions, urgently disperse heat and extract toxins to prevent internal migration, which would cause significant harm. Use Wuhe Tang (Five-Harmony Decoction) with Shengdi Huang (Rehmanniae Radix), Shengma (Cimicifugae Rhizoma), and Dengxincao (Junci Medulla). With such treatment, other complications will not arise; primarily administer Wan'an Yin (Ten-Thousand-Safety Drink).
Eruptions on the body present similarly to the above symptoms, with less dryness and itching, but floating rashes covering the whole body, lethargy, and displeasure, named Yinshi Duzheng (Yin-Damp Toxic Syndrome). Regardless of whether the rash is red or white, if the toxin enters the abdomen, it often causes harm; these conditions must not be lightly dismissed as ordinary.
(Bian Therapy: For treating red, wandering Dan du, allow mouth-sucking to gather toxic blood in one place. Crush fine porcelain, take sharp fragments, split them open using the end of a chopstick, bind tightly with thread. Hold the chopstick lightly between two fingers to expose the porcelain shard. At the site of gathered blood, strike frequently with another chopstick to prick out the toxic blood. For mild cases, simply suck out the toxic blood with the mouth and apply medication. If the lesion is on the head, do not use Bian therapy; instead, use a needle to prick the affected area while lying on the side to drain toxic blood. Delay leads to toxin entering the abdomen, making recovery difficult.)
[Attached Formulas]
Jiedu San (Detoxification Powder): Niubangzi (Arctii Fructus), Gancao (Glycyrrhizae Radix et Rhizoma), Jingjie (Schizonepetae Spica), Fangfeng (Saposhnikoviae Radix), Xijiao (Rhinocerotis Cornu).
Baiyu San (White Jade Powder): Huashi (Talcum), Hanshuishi (Aqua Calcitae) (each 3 qian 5 fen).
Sisheng San (Four Sages Powder): Huanglian (Coptidis Rhizoma), Qinpi (Fraxini Cortex), Muzei (Equiseti Herba), Dengxincao (Junci Medulla).
Bairen San (Hundred-Dispersion Powder): See Heat Syndromes section.
Siwu Tang (Four Substance Decoction): See Dysentery Syndromes section.
Wuhe Tang (Five-Harmony Decoction): See Various Sores section.
Wan'an Yin (Ten-Thousand-Safety Drink): Renshen (Ginseng Radix), Danggui (Angelicae Sinensis Radix), Huangqi (Astragali Radix), Fangfeng (Saposhnikoviae Radix), Chaihu (Bupleuri Radix), Zhike (Aurantii Fructus), Banxia (Pinelliae Rhizoma), Shaoyao (Paeoniae Radix), Huangqin (Scutellariae Radix), Gancao (Glycyrrhizae Radix et Rhizoma).
Gou Xuansha Fang (Dog Scabies Formula): Split pine and cypress joints, extract oil from chicken eggs, take a piece of matting the size of a bowl, cut a hole the size of a hand, place pine joint beside the hole, put Muxiang (Aucklandiae Radix) on the pine joint to collect the oil.