舌胎虽当分颜色。黄为胃火白肺热。惟有黑胎莫相逢。麻症逢之心经绝。
舌者心之苗。心为君火。麻本火候。故舌有胎。胎有黄、白、黑三种。白胎为肺热。黄胎为脾胃
热。均当清解疏利。更兼外症参详而治。如宣毒发表汤（见第五条）去升麻、桔梗、甘草。葛根解肌
汤（见第五条）去赤芍、甘草。葛根疏邪汤（见三十三条）防风败毒散（见第五条）去桔梗、甘草。苏
葛汤（见第六条）去柴胡、赤芍、甘草。俱可随症加减而施。纯黑者。则为心绝。黑而湿者。热淫血
分。黑而燥者。热淫气分。皆为危候。此症无分首尾。均宜清热疏利。一例而治。并宜用白虎解毒
汤（见二十六条）黑而湿者。多用生地黄、元参。燥者。倍用黄连、黄芩、麦冬、淡竹叶。加地骨皮、
木通。黑色渐退者吉。不退者不治。
唇燥火热在胃脾。红赤热重淡白微。若带紫黑而燥者。苦寒之味始相宜。
唇燥、乃脾胃二经之热。其症有三。一则唇淡白而枯燥者。其热尚微。以白虎汤（见二十六条）
去甘草、粳米。加麦冬、木通、牛蒡子治之。一则唇赤而枯燥者。其热极深。以白虎解毒汤
（见二十六条）加元参、牛蒡子、连翘、木通治之。一则唇带紫黑而枯燥者。其热剧而重也。以白
虎解毒汤（见二十六条）加犀角汁、元参、牛蒡子、木通、车前子治之。惟宜随症轻重。以清热分
利。方称良工。
Although tongue coating should be distinguished by color, yellow indicates stomach fire (Wei Huo), and white indicates lung heat (Fei Re). However, the appearance of a black coating is extremely ominous; in measles cases, a black coating signifies the exhaustion of Heart Qi.
The tongue is the sprout of the Heart. The Heart governs Ministerial Fire (Jun Huo), and measles pathology is inherently fire-related. Therefore, coatings appear on the tongue, categorized into three types: yellow, white, and black. A white coating indicates lung heat, while a yellow coating indicates spleen and stomach heat. Both require clearing heat, resolving the exterior, and promoting free flow. Treatment must also be guided by a comprehensive analysis of external symptoms. For instance: Xuan Du Fa Biao Tang (See Clause 5) with Shengma (Cimicifugae Rhizoma), Jiegeng (Platycodonis Radix), and Gancao (Glycyrrhizae Radix et Rhizoma) removed; Gegen Jie Ji Tang (See Clause 5) with Chishao (Paeoniae Radix Rubra) and Gancao removed; Gegen Shu Xie Tang (See Clause 33), Fangfeng Bai Du San (See Clause 5) with Jiegeng and Gancao removed; and Suge Tang (See Clause 6) with Chaihu (Bupleuri Radix), Chishao, and Gancao removed. These formulas may all be modified according to specific symptoms. A purely black coating indicates the exhaustion of Heart Qi. A black coating that is moist suggests heat invading the Blood level (Xue Fen); a black coating that is dry suggests heat invading the Qi level (Qi Fen). Both are critical conditions. Regardless of whether the disease is in its early or late stage, treatment should uniformly focus on clearing heat and promoting free flow. Baibu Jiedu Tang (See Clause 26) is suitable. For moist black coatings, use more Shengdihuang (Rehmanniae Radix) and Yuanshen (Scrophulariae Radix); for dry coatings, double the dosage of Huanglian (Coptidis Rhizoma), Huangqin (Scutellariae Radix), Maidong (Ophiopogonis Radix), and Danzhuye (Lophatheri Herba), adding Digupi (Cortex Lycii Radicis) and Mutong (Akebiae Caulis). If the black color gradually recedes, it is auspicious; if it does not recede, the condition is incurable.
Dry lips indicate fire-heat in the Stomach and Spleen meridians. Redness and chapping indicate severe heat, while pale whiteness indicates mild heat. Only when the lips are purple-black and dry are bitter-cold herbs appropriate.
Lip dryness results from heat in the Stomach and Spleen meridians. There are three presentations. First, pale-white and dry lips indicate mild heat; treat with Baibu Tang (See Clause 26) removing Gancao and Jingmi (Glumi Semen), adding Maidong, Mutong, and Niubangzi (Arctii Fructus). Second, red and dry lips indicate extreme heat depth; treat with Baibu Jiedu Tang (See Clause 26) adding Yuanshen, Niubangzi, Lianqiao (Forsythiae Fructus), and Mutong. Third, purple-black and dry lips indicate severe and intense heat; treat with Baibu Jiedu Tang (See Clause 26) adding Xijiao Zhi (Rhinocerotis Cornu Juice), Yuanshen, Niubangzi, Mutong, and Cheqianzi (Plantaginis Semen). One must only adjust the clearing of heat and promotion of fluid distribution according to the severity of symptoms to be considered a skilled physician.