夫上牙隶于坤土，足阳明胃脉之贯络也。下牙隶于干金。手阳明大肠脉之贯络
也，凡疮疹发热之初，口开前板齿燥者，里热心，宜以清凉之剂微解之。如发热切牙而
有久者，则为肝热；有上窜者，则为心热，此欲作搐也。然有肾主骨，牙为骨余，故寒
战切牙，则毒归于肾，皆为凶候，尤宜兼候参详，则吉凶自见至如收靥而牙龈溃烂者，
此肉疮未得平复也。失治则牙根溃烂出血，肉黑气臭而为走马疳矣。并凡齿干有黑苔
者，凶。靥后而牙落者，肾将绝也，不治。
夫舌者，心之候也。为心之苗，然脾脉亦络于舌。故延纳饮食，主持声音，其用亦
大矣。凡痘发热，其舌红润者，吉。燥如芒刺者，里热甚也，宜急解之，若疮出舌上，
密如堆粟，破如蜂窠者，危。更加饮水则呛，食物则哕，声哑不出者，并疮出太甚而
弄舌者，热病口干而舌黑者，并皆不治。更有舒舌者，是脾家津液不足而有微热，故舌
络微紧，时时舒舌，勿服凉药，更伤胃气，纵酷嗜饮水，不可误下，愈竭津液矣。
耳后一见青筋起，须识将来螈 频。耳之前后俱黄色，主惊入肾切牙真。若逢耳畔
筋青黑，横过发际直来侵。此切莫将他病看，须知脐下吊疼因。痘疮耳热耳苍黑，肾
热留邪病已深。若自太阳绕耳黑，黄泉在迩莫因循。眼内神光不耀明，乌珠转绿又红
呈。此皆症已成危迫，仔细扶持或可生。口唇红活无燥白，此可预决其痘吉。唇上燥裂
舌白苔，心经蕴热休他惑。粪门洞泄如竹筒，药石直下死之必。人中忽见青色干，主
乳不化并便难。印堂之上青色见，胎中受令夜啼寒。鼻有黑气死之因，鼻黑还知小便
禁。鼻孔燥干气粗大。此知衄血主相侵。若至鼻尖红色见，印堂直上亦红形。此主夜啼
麻疹见，或因心热毒痈生。
上牙归属于坤土，由足阳明胃经的脉络贯穿联络。下牙归属于干金，由手阳明大肠经的脉络贯穿联络。凡是疮疹发热初期，张口时前板齿干燥的，是里热炽盛，适宜用清凉的药物轻微疏解。如果发热时咬牙且持续时间较长，则是肝热；如果有牙齿向上窜动的现象，则是心热，这是即将发生抽搐的征兆。然而肾主骨，牙齿是骨的余气，所以寒战咬牙，说明毒邪归于肾脏，都属于凶险的征候，尤其应当兼参其他症状详细诊察，那么吉凶自然显现。至于痘疮收靥（结痂脱落）时牙龈溃烂的，这是肉疮未能平复愈合。失治则会导致牙根溃烂出血，肌肉发黑、气息臭秽，从而形成走马疳。并且凡是牙齿干枯且有黑苔的，均为凶兆。痘疮收靥后牙齿脱落的，是肾气将绝的表现，无法治愈。
舌头，是心脏的外候。它是心的苗窍，然而脾经的脉络也络属于舌。所以舌头在接纳饮食、主持声音方面，作用也非常大。凡是患痘疮发热，舌头红润的，为吉兆。舌头干燥如芒刺般的，是里热极盛，应当紧急疏解。如果疮毒发出并出现在舌面上，密集如堆积的粟米，破溃如蜂窝状的，病情危重。如果再出现饮水呛咳、进食呃逆、声音嘶哑说不出话的，以及疮毒发出太甚而弄舌的，还有热病口干而舌色发黑的，都属于不治之症。更有伸舌不止的情况，这是脾家津液不足而有微热，所以舌部经络微微拘紧，时时伸出舌头，此时不要服用凉药，以免更伤胃气，即使患者酷爱饮水，也不可误用攻下法，否则会进一步枯竭津液。
耳后一见青筋突起，必须识别将来会频繁出现抽搐惊风。耳朵的前后都呈现黄色，主因受惊导致邪气入肾，表现为咬牙真切。如果遇到耳畔筋脉呈青黑色，横过发际径直侵袭过来，这切莫当作其他疾病看待，须知这是由于脐下吊痛引起的。痘疮导致耳部发热、耳廓苍黑，是肾热留邪，病情已经深入。如果青色从太阳穴部位绕到耳后变黑，黄泉（指死亡）就在眼前，不可拖延。眼内神光不耀目明亮，黑眼球转绿又现红色，这些都是病症已成危急迫近之象，仔细扶持或许可以生还。口唇红活没有燥白之色，这可以预先判断痘疮预后吉祥。嘴唇上燥裂且舌有白苔，是心经蕴积热邪，不要被他症迷惑。肛门洞泄如水注如竹筒，药物直进直出，必死无疑。人中穴忽然见到青色且干燥，主因乳食不化并伴有排便困难。印堂之上见到青色，主因胎中受惊，夜间啼哭怕冷。鼻部有黑气是死亡的征因，鼻黑还知道小便闭塞不通。鼻孔干燥、呼吸气粗大，可知将有衄血（鼻出血）相侵。如果鼻尖出现红色，印堂直上也呈红色，这主因夜间啼哭、麻疹显现，或者因为心热毒邪痈肿生成。
The upper teeth belong to Kun Earth, connected by the meridians of the Foot-Yangming Stomach Channel. The lower teeth belong to Qian Metal, connected by the meridians of the Hand-Yangming Large Intestine Channel. In the initial stage of fever from sores and rashes (Chuang Zhen), if the patient opens their mouth and the anterior plate teeth are dry, it indicates intense heat in the interior; it is appropriate to use cooling agents to gently resolve it. If teeth grinding occurs during fever and lasts for a long time, it signifies Liver Heat; if the teeth appear to move upward, it signifies Heart Heat, which is a sign that convulsions (Chu) are about to occur. However, since the Kidney governs bones and teeth are the surplus of bones, chills with teeth grinding indicate that the pathogenic toxin has returned to the Kidney, all of which are ominous prognoses. One must carefully examine other symptoms to determine the auspicious or inauspicious outcome. As for gum ulceration when the scabs (Yie) fall off after the rash subsides, this indicates that the flesh sores have not yet healed. Failure to treat properly will lead to ulceration and bleeding of the tooth roots, blackening of the flesh, and foul odor, resulting in Zou Ma Gan (Gangrenous Stomatitis). Furthermore, dry teeth with black coating are an ominous sign. Tooth loss after the scabs fall off indicates the exhaustion of Kidney Qi and is incurable.
The tongue is the manifestation of the Heart. It is the sprout of the Heart, yet the Spleen meridian also connects to the tongue. Thus, its role in accepting food and drink and controlling voice is significant. In cases of fever from smallpox (Dou), a red and moist tongue is auspicious. A tongue dry as thorns indicates extreme internal heat, requiring urgent resolution. If lesions appear on the tongue, dense like piled millet and broken like a honeycomb, the condition is critical. If accompanied by choking when drinking water, hiccups when eating, hoarseness preventing speech, excessive rash eruption with tongue protrusion, or a black tongue due to heat disease and dry mouth, these are all untreatable. Additionally, continuous tongue protrusion indicates insufficient fluids in the Spleen system with slight heat, causing the tongue meridians to be slightly tight. Do not administer cold medicines to avoid further damaging Stomach Qi. Even if the patient craves water, do not mistakenly use purgatives, as this will exhaust fluids further.
A visible blue vein behind the ear indicates frequent future convulsions. Yellow color on both the front and back of the ears indicates fright entering the Kidney, manifesting as true teeth grinding. If blue-black veins appear at the side of the ear, crossing the hairline directly inward, do not mistake this for other diseases; know that it is caused by colic pain below the umbilicus. Ear heat and dark/black ear cartilage from smallpox indicate deep-seated pathogenic toxins due to Kidney heat. If blackness spreads from the Taiyang area around the ear, death (Huang Quan) is near; do not delay. Lack of brightness in the spirit of the eyes, greenish hue turning red in the black pupil, all indicate critical conditions; careful nursing may allow survival. Red and lively lips without dryness or whiteness predict an auspicious outcome for smallpox. Dry cracks on the lips with white tongue coating indicate accumulated heat in the Heart channel; do not be confused by other symptoms. Profuse diarrhea like water flowing through a bamboo tube, where medicine passes straight through, leads to certain death. Sudden dryness and blueness of the Philtrum (Ren Zhong) indicate undigested milk and difficulty in defecation. Blueness above the Yintang point indicates fetal fright, leading to night crying and cold sensitivity. Black qi on the nose is a cause of death; nasal blackness also indicates urinary retention. Dry nostrils with coarse breathing indicate impending epistaxis. Redness on the tip of the nose extending up to the Yintang indicates night crying, appearance of measles, or generation of carbuncles due to Heart heat and toxicity.