经络 心开窍于舌。而心脉又系于舌也。再肝脉络于舌本。肺脉络于舌傍。是舌属三经。不必专主于
心也。
紫舌胀者。舌胀满口。坚硬疼痛。由火盛血壅所致。又云。脾热则肿满。用衣针扎箸头上。露锋分许。于舌
上刺数十刺。令其血出。红色者轻。紫色者重。以温汤漱口。搽冰硼散。服凉膈散加牛蒡子、荆芥。倍栀子。
栀子泻火之要药也。或去硝、黄。一用番木鳖刮去壳。咀片含少许。即消。一用蓖麻子仁研纸捻。烧
烟熏舌。入口即消。一云。舌长过寸。研冰片敷之。即收。一灸少冲穴。
痰包生于舌下。结肿如瓠。光软如绵。甚则塞令满口。由火击痰饮流结而成。宜用铍针。对包上捻之如
钻。钻破出稀涎如鸡子清。稠粘不断。拭净。搽水调散。服二陈汤加黄芩、黄连、薄荷之类。仍忌煎炒火酒
等物。庶不再发。
冰硼散 治舌胀痰包。重舌木舌。咽喉肿痛。
冰片（一分） 硼砂（五钱） 辰砂（一钱） 牙硝（一钱）
为末。收用。喉生毒。加灯草烧灰。更效。
舌衄为舌上有孔小如针簪。大如箸头。其或色黑。出血如涌。由心火炎上血热所致。宜升麻汤、香参丸。
又云。肝壅则血出如涌。肝风则舌强。
升麻汤 治舌衄。血出如涌。
升麻 小蓟根 茜根（各两半） 艾叶（七钱五分） 寒水石（三两）
为末。每服三钱。用水一钟。煎七分。去渣。入生地黄汁一合。再煎一二沸。温服。或加柏叶。
香参丸 治症同前。
人参 麦冬 当归 生蒲黄（各五钱） 生地（一两） 甘草（炙二钱五分）
上为末。炼蜜为丸。小弹子大。每服一丸。每日三四服。白滚水化下。
经络方面：心开窍于舌，且心脉连接于舌。此外，肝的脉络联系于舌根，肺的脉络联系于舌旁。因此，舌与这三条经脉都有关联，并不专门由心所主司。
紫舌肿胀：表现为舌头胀满口腔，质地坚硬且疼痛。这是由火邪炽盛、血液壅滞所致。另一种说法认为，脾热也会导致肿胀满闷。治疗时可用衣针扎在筷子头上，露出针尖少许，在舌上刺数十下，令其出血。若血色红则为轻症，色紫则为重症。之后用温水漱口，外搽冰硼散，内服凉膈散并加入牛蒡子、荆芥，加倍使用栀子。栀子是泻火的要药。或者去掉芒硝、大黄，只用番木鳖（马钱子），刮去壳，切片含于口中少许，即可消肿。或者用蓖麻子仁研成纸捻，点燃熏烟刺激舌头，入口即消。还有一种说法是，若舌头伸长超过一寸，可研碎冰片敷贴，舌头即可收回。也可艾灸少冲穴。
痰包：生于舌下，结块肿胀如葫芦状，表面光滑柔软如棉，严重时堵塞使口腔充满。这是由火邪击动痰饮流注凝结而成。适宜用铍针，对着肿块像钻东西一样捻转，将其刺破，流出稀薄的涎液如同鸡蛋清一般，粘稠不断。擦拭干净后，外搽水调散，内服二陈汤加入黄芩、黄连、薄荷等药物。仍然忌食煎炒食物和烈性酒等，这样才不会再复发。
冰硼散：治疗舌胀、痰包、重舌、木舌以及咽喉肿痛。
配方：冰片（一分）、硼砂（五钱）、辰砂（一钱）、牙硝（一钱）。
制法：研为细末，密封保存备用。若喉部生毒，加入灯草烧成的灰，效果更佳。
舌衄：表现为舌上有小孔，小如针簪，大如筷子头。有的颜色发黑，出血如涌出。这是由心火炎上、血热所致。适宜用升麻汤、香参丸。另一种说法认为，肝气壅滞则血出如涌，肝风内动则舌头僵硬。
升麻汤：治疗舌衄，出血如涌出。
配方：升麻、小蓟根、茜根（各一两半）、艾叶（七钱五分）、寒水石（三两）。
制法：研为细末。每次服用三钱，用水一盏，煎至七分，去渣，加入生地黄汁一合，再煮沸一两次，温服。也可以加入侧柏叶。
香参丸：治疗的症状同上。
配方：人参、麦冬、当归、生蒲黄（各五钱）、生地（一两）、甘草（炙，二钱五分）。
制法：以上药材研为细末，炼蜜制成丸药，大小如小弹子。每次服用一丸，每日三四次，用白开水化服。
Meridians: The Heart opens into the tongue, and its vessels connect to the tongue. Furthermore, the Liver meridians link to the root of the tongue, and the Lung meridians link to the sides of the tongue. Therefore, the tongue is associated with these three meridians and is not exclusively governed by the Heart.
Purple Swollen Tongue: The tongue swells to fill the mouth, becoming hard and painful. This is caused by excessive fire and blood stagnation. Another view states that Spleen heat leads to swelling and fullness. Treatment involves using a clothing needle fixed to the tip of a chopstick, exposing only a small portion of the point, and pricking the tongue dozens of times to induce bleeding. Red blood indicates a mild condition, while purple blood indicates a severe one. Rinse the mouth with warm water, apply Bingpeng San (Ice Borax Powder), and orally administer Liangge San (Cooling the Diaphragm Powder) added with Niu Bang Zi (Arctii Fructus) and Jing Jie (Schizonepetae Herba). Double the dosage of Zhi Zi (Gardeniae Fructus), which is a key herb for purging fire. Alternatively, remove Xiao Ming Fan (Mirabilite) and Da Huang (Rhei Radix et Rhizoma), and use only Fan Mu Die (Strychni Semen). Scrape off the shell, slice it, and hold a small piece in the mouth to reduce swelling. Or, grind Sesame seed kernel (Ricini Semen) into a paper wick, ignite it to smoke the tongue, which will resolve upon entry. Another method states that if the tongue extends beyond one cun, apply crushed Bing Pian (Borneolum Syntheticum) externally to retract it. Moxibustion can also be applied to Shaochong (HT 9).
Phlegm Bao (Packet): Arises under the tongue, forming a swollen mass like a gourd, smooth and soft as cotton. In severe cases, it fills the mouth. It is formed by fire agitating phlegm-fluids that flow and congeal. It is suitable to use a Pi Zhen (Plum-blossom needle or specific surgical knife) to twist against the packet like drilling until it ruptures, releasing thin saliva resembling egg white, which is thick and unbroken. Wipe clean, apply Shui Tiao San (Water-Mixed Powder), and orally administer Er Chen Tang (Two-Cured Decoction) added with Huang Qin (Scutellariae Radix), Huang Lian (Coptidis Rhizoma), Bo He (Menthae Haplocalycis Herba), etc. Still avoid fried foods and strong alcohol so that recurrence is prevented.
Bingpeng San: Treats tongue swelling, Phlegm Bao, double tongue, wooden tongue, and sore throat with swelling and pain.
Ingredients: Bing Pian (Borneolum Syntheticum, 1 fen), Peng Sha (Borax, 5 qian), Chen Sha (Cinnabar, 1 qian), Ya Xiao (Natrii Sulfas, 1 qian).
Preparation: Grind into fine powder and store. If toxins arise in the throat, add ash from burned Deng Cao (Junci Medullae) for better efficacy.
She Nu (Tongue Hemorrhage): Manifests as small holes on the tongue, small as a hairpin or large as a chopstick head. Some appear black, with blood gushing out. This is caused by Heart fire flaming upward and blood heat. Sheng Ma Tang ( Cimicifugae Decoction) and Xiang Shen Wan (Aromatic Ginseng Pill) are suitable. Another view states that Liver stagnation causes blood to gush, while Liver wind causes tongue stiffness.
Sheng Ma Tang: Treats tongue hemorrhage with blood gushing out.
Ingredients: Sheng Ma (Cimicifugae Rhizoma), Xiao Ji Gen (Cirsii Japonici Radix), Qian Gen (Rubiae Radix) (each 1.5 liang), Ai Ye (Artemisiae Argyi Folium, 0.75 liang), Han Shui Shi (Halloysit Rubra, 3 liang).
Preparation: Grind into powder. Take 3 qian per dose, decoct with one zhong of water until reduced to 0.7 zhong, strain, add Sheng Di Huang Zhi (Rehmanniae Radix Fresh Juice, 1 he), boil briefly, and take warm. Cei Bai Ye (Biota Tops) may be added.
Xiang Shen Wan: Treats the same symptoms as above.
Ingredients: Ren Shen (Ginseng Radix et Rhizoma), Mai Dong (Ophiopogonis Tuber), Dang Gui (Angelicae Sinensis Radix), Sheng Pu Huang (Typhae Pollen Fresh, each 5 qian), Sheng Di Huang (Rehmanniae Radix, 1 liang), Gan Cao (Liquiritiae Radix et Rhizoma, processed, 2.5 qian).
Preparation: Grind all ingredients into powder, mix with refined honey to form pills the size of small marbles. Take one pill per dose, 3-4 times daily, dissolved in plain boiled water.