经曰∶中央黄色，入通于脾，开窍于口。又曰∶脾气通于口，脾和，口能知五味矣。
陈飞霞曰∶口者，脾之外候。鹅口者，口内白腻满舌，如鹅之口，此肺热而心脾为甚，故发于口也。内服沆
瀣丹，外以保命散吹之。
口疮者，满口赤烂。此因胎禀本浓，养育过温，心脾积热，熏蒸于上，以成口疮。内服沆瀣丹，外以地鸡擂
水搽疮上，（地鸡即桶虫，人家砖下有之。）
口糜者，满口生疮溃烂。乃膀胱移热于小肠，膈肠不便，上为口糜。以导赤散去小肠之热，五苓散去膀胱之
热，当以二方合服。
口疮服凉药不效，乃肝脾之气不足，虚火泛上而无制。宜理中汤以收其浮游之火，外以上桂末吹之。若吐泻
后，口中生疮，亦是虚火，理中汤。昧者以为口疮悉为实热，概用寒凉，必不救。上 有胀起如悬痈者，此名重
。由脾胃挟热，气血不能收敛而成，用针刺去恶血，内服沆瀣丹，以碧云散吹之。
小儿两颐流液，浸渍胸前
者，此名滞颐。盖涎者脾之液，
口为脾窍。脾胃虚寒，不能收敛津液，故涎从口出，而滞于颐，宜温脾丹。
小儿口频撮者，气不和也。盖唇应于脾，气出于肺，脾虚不能生肺，以故口频撮。异功散，补脾散，补
脾生肺愈矣。小儿口撮面青多哭，此阴寒之至，肝脾虚冷，脐下痛也，理中汤温之。
小儿急欲吮乳，而口不能吮者，心脾有热，舌不转运、泻黄汤清之。
《集成》沆瀣丹（见前伤湿方内）
《集成》保命散 治小儿鹅口口疮。
箭头沙 枯白矾 明牙硝（各一钱）
共为细末吹之。
五苓散 （见前咳嗽方内）
导赤散 （见前夜啼方内）
理中汤 （见前泄泻方内）
碧云散 治小儿悬痈重 用。
蒲黄末 洋青黛 白硼砂 明牙硝 生甘草（各等分） 共为细末吹之。
温脾丹 治小儿脾冷流涎，浸溃颐间用。
木香 半夏（各三钱） 炮姜 白术（各二钱） 陈皮 青皮（各一钱）
上共为细末，炼蜜为丸，龙眼核大，每服一丸末饮下。
导功散 （见前胀满方内）
泻黄散 治小儿心脾有热，舌不转运，不能吮乳。
茯苓 黄芩 黄柏 黄连 栀仁 茵陈蒿 泽泻（各一钱） 灯心（十茎） 水煎服下。涂蔚生曰∶陈飞
霞五苓散去膀胱之热，语未免有误。盖五苓散最热，为温化寒水凝结之药，而其热所以
能去者，因水滞中焦，而膀胱失其火化，不能化气上行，则津液四达。故口渴而身热胸烦也。今苓泽利水下降，
桂枝化水上行则卫气得升，津液得达，故真寒可除，而假热可去也。若以是为治膀胱火热之药，是何异以硝黄为
治阳明寒结者乎？然则膀胱之热，果何以去，曰∶五苓散去桂枝加以知柏芩连木通等味，斯可耳。
《黄帝内经》说：中央对应黄色，气机通于脾脏，开窍于口。又说：脾气通达于口，脾的功能调和，口就能辨别五味了。
陈飞霞说：口是脾脏的外在表现。鹅口疮，是指口腔内布满白色腻苔，覆盖舌头，形状像鹅的嘴巴，这是由于肺热且心脾热盛所致，所以病变出现在口中。内服沆瀣丹，外用保命散吹入患处。
口疮，是指满口红肿溃烂。这是因为胎儿禀赋浓厚，养育时保暖过度，导致心脾积热，热气熏蒸向上，从而形成口疮。内服沆瀣丹，外用将地鸡（即桶虫，人家砖块下常见）研磨成水，涂抹在疮面上。
口糜，是指满口生疮并溃烂。这是膀胱的热邪移注于小肠，导致膈部和大肠传导不利，热气上逆形成口糜。用导赤散清除小肠的热邪，用五苓散清除膀胱的热邪，应当将这两方合起来服用。
口疮服用凉药无效，是因为肝脾之气不足，虚火上浮而没有制约。宜用理中汤来收敛浮游之火，外用上桂末吹入患处。如果在吐泻之后，口中生疮，这也是虚火，应用理中汤。愚昧的人认为口疮都是实热，一概使用寒凉药物，必然无法治愈。如果上面有肿胀突起如悬痈者，这名叫重舌。这是由于脾胃挟带热邪，气血不能收敛而成，用针刺放出恶血，内服沆瀣丹，外用碧云散吹入患处。
小儿两腮流口水，浸渍胸前，这名叫滞颐。涎液是脾脏的体液，口是脾脏的窍道。脾胃虚寒，不能收敛津液，所以涎液从口中流出，停滞在两腮，宜用温脾丹。
小儿频繁撮动嘴唇，是气机不和的表现。因为唇与脾相应，气出于肺，脾虚不能滋养肺脏，所以口频繁撮动。可用异功散、补脾散，补脾以生肺气即可痊愈。小儿口撮面青且多哭，这是阴寒至极，肝脾虚冷，脐下疼痛，用理中汤温治。
小儿急切想吃奶，但口不能吮吸，这是心脾有热，舌体转动不灵，用泻黄汤清解。
《集成》保命散 治疗小儿鹅口疮和口疮。
箭头沙、枯白矾、明牙硝（各一钱）
共研为细末吹入患处。
碧云散 治疗小儿悬痈和重舌。
蒲黄末、洋青黛、白硼砂、明牙硝、生甘草（各等分）
共研为细末吹入患处。
温脾丹 治疗小儿脾冷流涎，浸渍两腮间。
木香、半夏（各三钱）、炮姜、白术（各二钱）、陈皮、青皮（各一钱）
以上共研为细末，用炼蜜制成丸药，大小如龙眼核，每次服用一丸，用米饮送服。
泻黄散 治疗小儿心脾有热，舌体转动不灵，不能吮吸乳汁。
茯苓、黄芩、黄柏、黄连、栀仁、茵陈蒿、泽泻（各一钱）、灯心草（十茎）
加水煎服。
涂蔚生说：陈飞霞关于五苓散去除膀胱之热的说法未免有误。因为五苓散性质偏热，是温化寒水凝结的药物。其热能去寒的原因，是因为水湿停滞在中焦，导致膀胱失去火的气化功能，不能化气上行，致使津液四达。所以出现口渴、身热、胸烦等症状。现在用茯苓、泽泻利水下行，桂枝气化水上行，则卫气得以升发，津液得以通达，所以真寒可除，假热可去。如果把五苓散当作治疗膀胱火热之药，这与把芒硝、大黄当作治疗阳明寒结的药有什么区别呢？那么，膀胱的热究竟如何去除呢？回答说：在五苓散中去掉桂枝，加入知母、黄柏、黄芩、黄连、木通等药物，才可以。
The *Yellow Emperor's Inner Canon* states: The center corresponds to the color yellow, its qi connects with the Spleen, and it opens into the mouth. It also states: The Spleen's qi communicates with the mouth; when the Spleen is harmonious, the mouth can perceive the five flavors.
Chen Feixia said: The mouth is the external manifestation of the Spleen. "Goose-mouth" (Equeous Mouth) refers to white, greasy coating filling the oral cavity and covering the tongue, resembling a goose's beak. This is caused by Lung heat exacerbated by Heart and Spleen heat, hence manifesting in the mouth. Internally administer Hangxie Dan, and externally apply Baoming San as a powder insufflation.
Mouth sores refer to redness and ulceration throughout the mouth. This occurs due to strong prenatal endowment and excessive warmth during upbringing, leading to accumulated heat in the Heart and Spleen. This heat steams upward, resulting in mouth sores. Internally administer Hangxie Dan, and externally apply water made from grinding Di Ji (ground beetles, commonly found under bricks at home) onto the sores.
Oral thrush (Kou Mi) refers to ulcers and erosion throughout the mouth. This results from Heat transferring from the Bladder to the Small Intestine, causing obstruction in the diaphragm and intestines, with Heat rising to form oral thrush. Use Daochi San to clear Heat from the Small Intestine, and Wuling San to clear Heat from the Bladder; these two formulas should be taken together.
If mouth sores do not respond to cooling medicines, it is due to deficiency of Qi in the Liver and Spleen, allowing deficient Fire to float upward without restraint. Use Lizhong Tang to gather the floating Fire, and externally insufflate Shanggui (Cinnamon Twig) powder. If sores appear in the mouth after vomiting or diarrhea, this is also due to deficient Fire; use Lizhong Tang. Ignorant practitioners assume all mouth sores are excess Heat and indiscriminately use cold-natured herbs, which will certainly fail to save the patient. If there is swelling above resembling a hanging abscess, this is called "Double Tongue" (Chong She). This is formed by Spleen and Stomach carrying Heat, preventing Qi and Blood from converging. Puncture with a needle to release evil blood, internally administer Hangxie Dan, and externally apply Biyun San as insufflation.
When infants drool from both cheeks, soaking the chest, this is called "Stagnant Saliva" (Zhi Yi). Saliva is the fluid of the Spleen, and the mouth is the orifice of the Spleen. Due to deficiency-cold of the Spleen and Stomach, fluids cannot be contained, so saliva flows from the mouth and stagnates in the cheeks. Use Wenpi Dan.
Frequent puckering of the lips in infants indicates disharmony of Qi. The lips correspond to the Spleen, and Qi originates from the Lung. Spleen deficiency fails to generate Lung Qi, causing frequent lip puckering. Use Yigong San or Bupi San; tonifying the Spleen to generate Lung Qi will cure it. If an infant pucks their mouth, has a blue-green face, cries frequently, this indicates extreme Yin Cold, deficiency-cold of the Liver and Spleen, and pain below the umbilicus. Warm with Lizhong Tang.
If an infant urgently desires to suckle milk but cannot, it is due to Heat in the Heart and Spleen, causing the tongue to be immobile. Clear with Xiehuang Tang.
*Jicheng* Hangxie Dan (see formula for Injury by Dampness previously mentioned)
*Jicheng* Baoming San treats infant goose-mouth and mouth sores.
Shentousha (Arrowhead Sand), Kubaifan (Dried White Alum), Mingyanxiao (Refined Niter) (each 1 qian)
Grind into fine powder and insufflate.
Wuling San (see formula for Cough previously mentioned)
Daochi San (see formula for Night Crying previously mentioned)
Lizhong Tang (see formula for Diarrhea previously mentioned)
Biyun San treats infant hanging abscess and double tongue.
Puhuang Mo (Powdered Spore of Lygodium), Yangqingdai (French Indigo), Baipengsha (White Borax), Mingyanxiao (Refined Niter), Shenggancao (Raw Licorice Root) (equal parts)
Grind into fine powder and insufflate.
Wenpi Dan treats infant spleen-cold with drooling soaking the cheeks.
Muxiang (Aucklandia Root), Banxia (Pinellia Tuber) (each 3 qian), Paojiang (Prepared Ginger), Baizhu (Atractylodes Rhizome) (each 2 qian), Chenpi (Tangerine Peel), Qingpi (Green Tangerine Peel) (each 1 qian)
Grind all into fine powder, mix with refined honey to make pills the size of a longan seed. Take one pill per dose, washed down with rice water.
Yigong San (see formula for Distension previously mentioned, text erroneously reads "Daogong San")
Xiehuang San treats infant Heart-Spleen Heat, immobility of the tongue, and inability to suckle.
Fuling (Poria), Huangqin (Scutellaria Root), Huangbai (Phellodendron Bark), Huanglian (Coptis Rhizome), Zhiren (Gardenia Seed), Yinchenhao (Artemisia Capillaris), Zexie (Alisma Rhizome) (each 1 qian), Dengxincao (Juncus Effusus) (10 stems)
Decoct in water and take orally.
Tu Weisheng commented: Chen Feixia's statement that Wuling San removes Bladder Heat is somewhat erroneous. Wuling San is inherently warm/hot in nature, serving as a medicine to warm-transform congealed cold-water. Its ability to remove cold is because water stagnates in the Middle Jiao, causing the Bladder to lose its Fire-Qi transformation function, failing to transform Qi and ascend. Consequently, body fluids disperse widely, leading to thirst, fever, chest irritability, etc. Now, Fuling and Zexie promote urination downward, while Guizhi transforms water upward, allowing Wei Qi to ascend and body fluids to reach. Thus, true cold is removed, and false heat dissipates. To treat Bladder Fire-Heat with this formula would be akin to using Xiaoshi (Mirabilite) and Dahuang (Rhubarb) to treat Yangming Cold-Constipation. So, how should Bladder Heat truly be removed? The answer is: Remove Guizhi from Wuling San and add Zhimu (Anemarrhena Rhizome), Huangbai (Phellodendron Bark), Huangqin (Scutellaria Root), Huanglian (Coptis Rhizome), Mutong (Akebia Stem), etc., and only then is it suitable.