唇疔生于上下嘴唇，系脾胃两经火毒所致。初起如粟，或不痛，或痒甚，其形甚微，其
毒极深，其色或赤或白；若唇口上下紫黑色者，根行甚急，不一日头面肿大，三、四日即不
救。疔毒以愈小而愈横也。治宜急泄火毒，勿损其脾胃之气，毒易散矣。以蟾酥丸、犀角地
黄汤主之。外用白雪丹入疮头，以膏盖贴，俟次日揭开，挤去毒血；如未透泄，再用再贴。
又初时须细看腿湾委中穴，有紫黑筋，用长针刺破出血，其毒即泄。
茧唇亦生于嘴唇。经云∶唇本脾之外候。又云∶脾之荣在唇。故燥则干，热则裂，风则
，寒则揭。若肿起白皮皱裂如蚕茧状，故名茧唇也。或因思虑暴急，心火焦炽，传授脾经
；或因醇酒浓味，积热伤脾，而肾水枯竭。须审其证之因，惟补肾水、生脾血，则燥自润，
火自除，风自息，肿自消矣。归脾养荣汤主之；作渴者，早服加减八味丸，午服清凉甘露饮
，以滋化源。若妇人患此，阴血衰少故也，四物逍遥散主之。
又 唇疳，发于小儿嘴唇四旁，红赤无皮，不时燥裂。此由脾经湿热，或胃火积热
上壅，小儿时以舌伸 ，以润其燥。以白芷、五倍子为末，掺之即愈。
夫口疮与口糜者，乃心脾气滞，更外感风热所致。初起不可便用凉药敷掺，恐寒凝不散
，内溃奔走，久而难愈。必先用辛轻升散，而后清凉，使郁火达外，再视其所因而治之。若
脉实口干，满口色红，而烂斑甚者，此实火也，以凉膈散主之；若脉虚不渴，口内色淡，而
白斑细点，此因思烦太甚，多醒少睡，虚火上攻，宜以知柏四物汤加丹皮、肉桂治之；更有
脾元衰弱，中气不足，不能按纳下焦阴火，是以上乘而为口疮糜烂者，丹溪所谓劳役过度，
虚火上炎，游行无制，舌破口疮是也，又当从理中汤加附子治之。若作实热，误投凉药，则
必致害矣。又小儿生此证者，以阴气未生，阳气偏盛；又因将养过温，心脾积热，薰蒸于上
而发。治宜泻心化毒清凉为主。若月内诸病，而口无涎沫者，凶。
唇疔生于上下嘴唇，是由脾胃两经的火毒引起的。初起时像粟米大小，或者不痛，或者非常痒，形状很小，但毒性极深，颜色或红或白；如果嘴唇上下呈现紫黑色，根部发展迅速，不到一天头面就会肿大，三、四天就无法救治了。疔毒的特点是越小越容易扩散横行。治疗应当紧急清泄火毒，不要损伤脾胃之气，这样毒邪就容易消散。以蟾酥丸、犀角地黄汤为主治方剂。外用白雪丹掺入疮口顶部，用膏药覆盖贴敷，等到第二天揭开，挤出毒血；如果毒邪未完全透发，再次使用并贴敷。另外，初起时必须仔细查看腿弯处的委中穴，如果有紫黑色的筋脉，用长针刺破出血，毒邪即可泄出。
茧唇也生于嘴唇。医经说：唇是脾的外在表现。又说：脾的精气荣华表现在唇上。所以干燥则干裂，热盛则破裂，受风则抽搐，受寒则紧缩。如果肿胀起来，表面有白皮皱裂，形状像蚕茧一样，所以名叫茧唇。这可能是因为思虑急躁，心火焦灼炽盛，传变给脾经；也可能是因为嗜酒厚味，积热损伤脾脏，导致肾水枯竭。必须审查病症的原因，只要补肾水、生脾血，那么干燥自然滋润，火邪自然消除，风邪自然平息，肿胀自然消退。以归脾养荣汤为主治方剂；感到口渴的，早上服用加减八味丸，中午服用清凉甘露饮，以滋养化源。如果是妇女患此病，是因为阴血衰少，以四物逍遥散为主治方剂。
还有唇疳，发于小儿嘴唇四周，红赤无皮，经常干燥开裂。这是由于脾经湿热，或者胃火积热上壅，小儿不时伸出舌头舔舐，以润其干燥。用白芷、五倍子研成粉末，撒在患处即可痊愈。
至于口疮和口糜，是由于心脾气机阻滞，又外感风热所致。初起时不可立即使用凉药敷撒，恐怕寒气凝滞不散，导致内部溃烂扩散，时间久了难以治愈。必须先用辛轻升散的药物，然后再用清凉药物，使郁结之火向外发散，再根据病因进行治疗。如果脉象实有力、口干，满口色红，且糜烂斑片严重的，这是实火，以凉膈散为主治方剂；如果脉象虚无力、不渴，口内颜色淡，且有白斑细点，这是因为思虑过度，多醒少睡，虚火上攻，宜用知柏四物汤加牡丹皮、肉桂治疗；更有脾元衰弱，中气不足，不能制约下焦阴火，所以上乘而为口疮糜烂的，就是朱丹溪所说的劳役过度，虚火上炎，游行无制，导致舌破口疮，这种情况又应当从理中汤加附子治疗。如果把这种证候当作实热，误投凉药，就必然造成危害。另外，小儿患此证的，是因为阴气尚未生成，阳气偏盛；又因为养育过温，心脾积热，熏蒸于上而发病。治疗应以泻心解毒清凉为主。如果在月龄内的婴儿出现各种疾病，而口中没有涎沫的，预后凶险。
Chapping Ding (Lip Carbuncle) arises on the upper and lower lips, caused by Fire-Toxin in the Spleen and Stomach meridians. Initially, it resembles millet grains; it may be painless or extremely itchy. Its form is minute, but its toxicity is profound, with color varying between red and white. If the lips exhibit purple-black discoloration, the root progresses rapidly; within one day, the head and face swell, and death ensues within three to four days. The nature of Ding-Toxin is that the smaller it is, the more aggressively it spreads. Treatment requires urgent purging of Fire-Toxin without damaging the Qi of the Spleen and Stomach, allowing the toxin to dissipate easily. Primary formulas include Chan Su Wan (Toad Venom Pill) and Xijiao Dihuang Tang (Rhinoceros Horn and Rehmannia Decoction). Externally, Baixue Dan (White Snow Powder) is applied into the center of the lesion, covered with a plaster, and removed the next day to express toxic blood. If the toxin has not fully discharged, the application is repeated. Additionally, at the onset, carefully inspect the Weizhong (BL-40) acupoint in the popliteal fossa for purple-black veins; puncture these with a long needle to release blood, thereby draining the toxin.
Jian Chun (Silkworm Cocoon Lip) also occurs on the lips. The Classics state: "The lip is the external manifestation of the Spleen." And again: "The brilliance of the Spleen manifests in the lips." Therefore, dryness causes chapping, heat causes cracking, wind causes twitching, and cold causes contraction. If swelling occurs with white skin wrinkling and cracking resembling a silkworm cocoon, it is named Jian Chun. Etiology may involve excessive worry and urgency leading to scorching Heart-Fire transmitting to the Spleen Meridian, or accumulation of heat from rich wine and food damaging the Spleen, resulting in exhaustion of Kidney Water. One must examine the cause of the syndrome. By tonifying Kidney Water and generating Spleen Blood, dryness naturally moistens, fire is eliminated, wind subsides, and swelling resolves. Gui Pi Yang Rong Tang (Restore the Spleen and Nourish the Nutrient Decoction) is the primary formula. For those with thirst, Jiajian Bawei Wan (Modified Eight-Ingredient Pill) is taken in the morning, and Qinggang Ganlu Yin (Clear Diaphragm Sweet Dew Drink) at noon, to nourish the source of transformation. In women suffering from this condition, due to deficiency of Yin-Blood, Si Wu Xiao Yao San (Four Substances and Free Wanderer Powder) is used.
Furthermore, Chun Gan (Lip Ulcer) appears around the lips of infants, presenting as red, denuded skin with frequent dryness and cracking. This results from Damp-Heat in the Spleen Meridian or accumulated Heat in the Stomach rising upward. Infants often extend their tongues to lick the area to moisten the dryness. Bai Zhi (Angelicae Dahuricae Radix) and Wu Bei Zi (Galla Chinensis) are ground into powder and sprinkled on the lesion for cure.
Kou Chuang (Oral Ulcer) and Kou Mi (Oral Thrush/Mucosal Erosion) result from stagnation of Heart and Spleen Qi combined with external Wind-Heat invasion. At the onset, cooling herbs should not be applied immediately, lest cold congeal and fail to disperse, leading to internal ulceration and spread, making prolonged healing difficult. One must first use pungent, light, ascending, and dispersing agents, followed by cooling measures, to allow constrained Fire to vent outward, then treat according to the specific etiology. If the pulse is excess and forceful, accompanied by dry mouth, diffuse redness, and severe erosive patches, this indicates Excess Fire; Liang Ge San (Cool the Diaphragm Powder) is indicated. If the pulse is deficient and there is no thirst, with pale oral mucosa and fine white spots, this stems from excessive mental agitation, excessive wakefulness with insufficient sleep, causing Deficient Fire to attack upward; Zhi Bo Si Wu Tang (Anemarrhena, Phellodendron, and Four Substances Decoction) augmented with Mu Dan Pi (Moutan Cortex) and Rou Gui (Cinnamon Bark) is appropriate. Furthermore, when Spleen Yuan is weak and Middle Qi is insufficient, failing to anchor Lower Jiao Yin-Fire, which ascends to cause oral ulcers and erosion, this corresponds to Zhu Danxi's description of overexertion leading to Deficient Fire flaming upward, roaming uncontrolled, causing tongue breaks and oral ulcers. In such cases, Li Zhong Tang (Regulate the Middle Decoction) augmented with Fu Zi (Aconite Lateral Root) is indicated. Mistaking this for Excess Heat and mistakenly administering cooling drugs will inevitably cause harm. Regarding infants, this condition arises because Yin-Qi is not yet generated, while Yang-Qi is predominant; additionally, excessive warmth in care leads to accumulation of Heat in the Heart and Spleen, steaming upward and manifesting. Treatment should focus on purging Heart-Fire, resolving toxicity, and clearing heat. If an infant under one month old presents with various diseases but lacks saliva in the mouth, the prognosis is ominous.