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To treat *mutou* (wooden tongue, characterized by a stiff and swollen tongue) where both the mouth and tongue are rigid, to the extent that even cloth stuffed in the mouth cannot be opened. (From *Mifang*)
Bohe (Menthae Haplocalyx), Xicha (Fine tea leaves) (equal parts)
Decoct together. Expose overnight in the open air. Wrap a chopstick with green silk fabric, dip it into the medicine, and gently apply it to the affected area; the swelling will subside spontaneously.

To treat *zhongshe* (double tongue, swelling under the tongue resembling a second tongue) and *mutou*.
Huanglian (Coptidis Rhizoma) (2 qian, honey-fried), Baijiangcan (Bombyx Batryticatus) (1 qian)
Grind finely together. Sprinkle onto the tongue; once saliva flows out, recovery occurs.
Another prescription: Slice fresh ginger, dip in Pengsha (Borax) powder, and rub on the affected area.

To treat *zhongshe*, *mutou*, purple tongue, as well as new or chronic swelling and pain of the throat, mouth, and teeth, along with long-term coughing due to phlegm-fire causing throat pain.
Xuanmingfen (Mirabilite), Pengsha (Borax) (5 qian each), Zhusha (Cinnabaris) (6 fen), Bingpian (Borneolum Syntheticum) (3 pieces)
Grind finely together. Blow into the throat 5–6 times daily.

Kui Guang stated: Purple tongue swelling belongs to Heart Fire. Internally, there must be restlessness and confusion. It is suitable to blow Bi Dan into the throat. (The formula is recorded in the Throat Section.) Internally, administer Ji Jian Xi Jiao Di Huang Tang (Modified Rhinoceros Horn and Rehmannia Decoction).
*Yitong* stated: Depression of the seven emotions and heat obstruction in the Heart Meridian cause the tongue to swell fully, preventing breathing. Heart heat causes the tongue to crack and form sores; Liver heat causes the tongue to become stiff like wood; Spleen heat causes the tongue to feel rough with coating; Lung heat causes the tongue to become rigid; extreme heat causes the tongue to dry like a saw blade. If the tongue curls inward and the scrotum retracts, it indicates the exhaustion of the Jueyin Meridian and is untreatable.
*Xinfu* stated: If the tongue suddenly swells and protrudes outside the mouth, it is due to centipede toxicity. It is suitable to soak the tongue in a small cup of rooster blood, after which it will retract.

For treating tongue swelling, the "breaking the coffin" method yields immediate results and also treats *zhongshe* and *mutou*. Zaofan (Alum) in any amount is placed on a new tile and heated until it turns red. Remove it and place it on the ground to cool, then grind into fine powder. Use iron pincers to pry open the patient's jaw, and rub this powder on the tongue for immediate cure.
Another prescription: Sieve Zhen Puhuang (Typhae Pollen) into fine powder, frequently brush it onto the tongue, and the swelling will recede spontaneously. If swallowing is possible, decoct Huanglian in wine and swallow it slowly to drain Heart Fire, which is especially effective.
Another prescription: For tongue swelling that prevents opening, crush Bimaren (Ricini Semen) until paste-like. Extract the oil using cotton paper, roll it into a paper wick, light it on a lamp, extinguish it, and smoke the affected area with the smoke; the swelling will subside after a while.

Treating tongue swelling: Soak Huangbai (Phellodendri Cortex) in Zhuli (Bamboo Sap) overnight, grind into powder, and apply to the tongue.
If the tongue swells and protrudes outside the mouth, boil Dongqingye (Ilex Rotundae Folium) to make a concentrated juice and soak the tongue in it.

Treating tongue swelling blocking the throat.
Piaoxiao (Natrii Sulfas), Baifan (Alumen) (equal parts)
Grind into fine powder and apply to the site; the swelling disappears immediately.

Treating tongue swelling.
Baicaoshuang (Soot from kitchen chimneys), Haiyan (Sea Salt) (equal parts)
Grind into powder, mix with Jinghua Shui (well water), and take orally.