《经》曰∶舌乃心之苗。又曰∶中央黄色，入通于脾，开窍于口，藏精于脾，故病
在舌。又曰∶心脉系舌本，脾脉络舌旁，系舌下，故发为病，或生疮，或重舌木舌诸
症，皆二经之所致也。然肝脉亦络舌本，故风寒所中，则蜷缩而不言，七情所郁，则热
肿满而不消，心热则裂而疮，脾热则滑而苔，而脾闭则白胎如雪，肝壅热则血上涌。
若舌无故自痹者，不可作风热治，盖由心血不足，血虚火烁耳，理中汤合四物汤治之。
昔有人舌上生疮，久蚀成穴，服凉药不效，此下元虚寒，虚火不降，投养正丹遂愈。
治上膈壅热，口舌生疮，咽嗌肿塞。
朱砂（一钱五分，研） 寒水石（ 通赤，三钱二分） 脑子（二分半，研） 为
末，每日三五次，夜卧掺贴。
甚者，加西牛黄一分更好。
冰片（二分） 人中白（ ，二钱） 麝香（一分） 铜青（三钱五分） 上研极细，令浓茶净
口，吹少许，候痰涎流尽，再吹一二次即煎。
一方
治舌肿，用百草霜为末，好醋调敷立
治上膈热壅，口舌主疮，先用此升发。
升麻（一两五钱） 赤芍药 人参 桔梗 葛根 薄荷 防风（各一钱） 甘草（五分） 水煎食后服。
治三焦实热。
黄芩（春四两、夏秋六两、冬三两） 大黄（春三两、夏一两、秋二两、冬五两）
黄连（春四两、夏五两、秋冬三两） 为末，蜜丸，每服百丸，食后白汤下。
The *Classic of Internal Medicine* states: The tongue is the sprout (external manifestation) of the Heart. It also states: The center corresponds to yellow, internally connecting to the Spleen, opening into the mouth, and storing essence in the Spleen; therefore, diseases manifest on the tongue. Furthermore, it states: The Heart meridian connects to the root of the tongue, and the Spleen meridian links to the sides of the tongue and ties to the underside of the tongue. Thus, when disease arises, sores may appear, or conditions such as double tongue (Chong She) and wooden tongue (Mu She) may occur, all caused by disorders of these two meridians. However, the Liver meridian also links to the root of the tongue. Therefore, if struck by wind-cold, the tongue curls up and speech is lost; if depressed by the seven emotions, heat-swelling becomes full and does not subside; Heart-heat causes cracking and sores; Spleen-heat causes slipperiness and coating; Spleen closure results in a white coating like snow; Liver stagnation with heat causes blood to rush upward. If the tongue suddenly becomes numb and obstructed without cause, it should not be treated as wind-heat, but rather due to insufficiency of Heart-blood, where blood deficiency leads to fire scorching; this should be treated with Lizhong Tang combined with Siwu Tang.
In the past, someone had sores on the tongue that eroded into holes over time. Cooling medicines were ineffective. This was due to deficiency-cold in the lower origin, with deficient fire failing to descend. After administering Yangzheng Dan, he recovered.
To treat upper jiao (Upper Burner) congestion-heat, sores in the mouth and tongue, and swelling and obstruction of the throat:
Cinnabar (Qinsha, Zhu Sha, 1.5 qian, ground) Shuihanshi (Calcitritum, 3.2 qian, calcined until red) Bingpian (Borneolum Syntheticum, 0.25 qian, ground). Grind into powder. Apply three to five times daily, and sprinkle/adhere at night before sleep.
If severe, adding Xi Niuhuang (Bovis Calculus, 0.1 fen) is better.
Bingpian (Borneolum Syntheticum, 0.2 fen) Renzhongbai (Nitrinum, 2 qian) Shexiang (Moschus, 0.1 fen) Tongqing (Aerugo Cupri, 3.5 qian). Grind all into extremely fine powder. Rinse the mouth thoroughly with strong tea. Blow a small amount into the affected area. Wait for phlegm and saliva to drain completely, then blow one or two more times until healing occurs.
Another prescription:
To treat tongue swelling, use Baicaoshuang (Fuligo Silicea) ground into powder, mixed with good vinegar for application, which works immediately.
To treat upper jiao heat congestion, sores in the mouth and tongue, first use this formula to raise and diffuse:
Shengma (Cimicifugae Rhizoma, 1.5 liang) Chishao (Paeoniae Radix Rubra) Renshen (Ginseng Radix et Rhizoma) Jiegeng (Platycodonis Radix) Gegen (Puerariae Lobatae Radix) Bohe (Menthae Haplocalycis Herba) Fangfeng (Saposhnikoviae Radix) (each 1 qian) Gancao (Glycyrrhizae Radix et Rhizoma, 0.5 qian). Decoct in water and take after meals.
To treat excess-heat of the Sanjiao (Triple Burner):
Huangqin (Scutellariae Radix, 4 liang in Spring, 6 liang in Summer/Autumn, 3 liang in Winter) Dahuang (Rhei Radix et Rhizoma, 3 liang in Spring, 1 liang in Summer, 2 liang in Autumn, 5 liang in Winter) Huanglian (Coptidis Rhizoma, 4 liang in Spring, 5 liang in Summer, 3 liang in Autumn/Winter). Grind into powder, make pills with honey. Take 100 pills per dose, washed down with warm water after meals.