Library

When a child's Heart and Stomach fire is excessive, the Lianquan acupoint opens, causing continuous drooling from the mouth.
It is also said: When adults play with children and pinch their cheeks, it causes the child to drool.
Folklore states: If a pregnant woman desires sour or sweet foods but cannot obtain them, her infant will tend to drool excessively.

Empirical prescription (from *Ji Jiu*): Use a basin of hot water, add one spoonful of Alum (*Bai Fan*), and frequently wash the child's feet; recovery will be immediate.
Another method: Rub fish on the child's mouth.

*Yi Lun Xuan Yao* states: The mouth is the orifice of the Spleen, and many meridians converge there. Generally, the five flavors enter the mouth and are stored in the Spleen and Stomach, where they are transformed into fluids to nourish the Qi of the Five Zang organs. If regulation is slightly impaired, the Qi of the Five Zang organs becomes excessive in certain aspects, giving rise to various diseases. Therefore, mouth ulcers result from stagnation of Spleen Qi compounded by Wind-Heat; treatment should focus on clearing the Stomach and purging Fire.
Feng Luzhan stated: Mouth ulcers are caused by Heat accumulation in the Heart and Spleen. Children have not yet generated sufficient Yin Qi, while Yang Qi is relatively excessive. Furthermore, if nurtured too warmly, Heat accumulates in the Heart and Spleen, steaming upwards to form sores. Treatment should involve purging the Heart and resolving toxicity, primarily using cooling methods. For infants within one month of age suffering from other illnesses, if there is no saliva in the mouth, the prognosis is ominous.
It is also said: In cases of oral and lingual sores, cool medicines should not be applied immediately at the onset, as cold nature may cause stagnation and prevent dispersion, leading to internal ulceration and spread, making long-term healing difficult. One must first use pungent and light ascending-dispersing herbs, followed by cooling agents, to allow constrained Fire to reach the exterior, and then treat according to the specific etiology. Additionally, deficiency of Middle Qi and decline of the Spleen and Stomach can fail to consolidate and accept Qi from the Lower Jiao, forcing Yin Fire to flare upwards, resulting in mouth ulcers due to deficient Yang. As Danxi described: Excessive labor leads to deficient Fire flaring upwards, wandering without restraint, causing tongue breaks and mouth ulcers; in such cases, *Lizhong Tang* (Regulate the Middle Decoction) with added Aconite (*Fu Zi*) should be used. If mistaken for excess Heat and treated with cooling medicines, the harm would extend beyond mere mouth ulcers.
It is further stated: Mouth ulcers can result from Excess Heat in the Upper Jiao, Deficient Cold in the Middle Jiao, and Yin Fire in the Lower Jiao, transmitted through various meridians; thus, they must be treated differently. For symptoms such as fever, thirst, and desire for cold drinks, this indicates Excess Fire. Mild cases use *Buzhong Yiqi Tang* (Tonify the Middle and Augment the Qi Decoction); severe cases use *Liujunzi Tang* (Six Gentlemen Decoction). For reduced appetite and loose stools, indicating Middle Qi deficiency, *Renshen Lizhong Tang* (Ginseng Regulate the Middle Decoction) is used. For cold extremities and abdominal pain, indicating Middle Qi Deficient Cold, *Fuzi Lizhong Tang* (Aconite Regulate the Middle Decoction) is prescribed. For afternoon fever, internal heat, and intermittent fever, indicating Blood deficiency, *Bawu Tang* (Eight Substances Decoction) with added Moutan Cortex (*Dan Pi*), Schisandra Berry (*Wu Wei Zi*), and Ophiopogon Tuber (*Mai Dong*) is used. For fever, thirst, expectoration, and frequent urination, indicating Kidney Water deficiency, *Bawei Wan* (Eight Ingredients Pill) is administered. For afternoon fever or heat rising from the lower abdomen, indicating Yin deficiency, *Siwu Tang* (Four Substances Decoction) combined with Ginseng (*Ren Shen*), Atractylodes Rhizome (*Bai Zhu*), Schisandra Berry (*Wu Wei Zi*), and Ophiopogon Tuber (*Mai Dong*) is used; if ineffective, *Jiajian Bawei Wan* (Modified Eight Ingredients Pill) is employed. If the fever comes and goes, appearing during the day and hiding at night, or vice versa, occurring irregularly, or moving unpredictably, or starting from the feet, this is Rootless Fire. The aforementioned pills, along with *Shiquan Dabu Tang* (Ten Complete Tonifying Decoction) plus Ophiopogon Tuber (*Mai Dong*) and Schisandra Berry (*Wu Wei Zi*), should be used. Additionally, Aconite powder mixed with saliva should be applied to the Yongquan acupoint. If cold-cooling medicines are indiscriminately used, damaging vital energy, the harm will be significant. One might ask: How can Deficient Cold produce mouth ulcers, warranting the use of *Fuzi Lizhong Tang*? This is because when the Stomach is deficient and grain intake is low, the controlling element (Kidney) Water Qi rebels and attacks, turning into Middle Cold. The weak Fire of the declining Spleen and Stomach is forced to flare upwards, forming mouth ulcers. The Classic states: "When Metal of the year is insufficient, Flaming Fire prevails; upon return, cold rain arrives violently, Yin reversal blocks, Yang rises inversely, and the people suffer from mouth ulcers." Therefore, Ginseng, Atractylodes, and Licorice are used to tonify Earth; Ginger and Aconite are used to disperse Cold. Once Fire receives assistance, it retreats and withdraws.