鼻头微黑,为有水气。色见黄者,胸上有寒。色白亡血。微赤非时,见之者死。
察色精微,莫先于目下之精明,鼻间之明堂。经谓“精明五色者,气之华也”,是五脏之精华,上见为五
色,变化于精明之间,某色为善,某色为恶,可先知也。仲景更出精微,尤要在中央鼻准,毋亦以鼻准在
天为镇星,在地为中狱,木金水火四藏,气必归并于中土耶!其谓“鼻头色青,腹中苦冷者死”,此一语
独创千古。后人每恨《卒病论》亡,莫由仰溯渊源,不知此语正其大者。盖厥阴肝木之青色,挟肾水之
寒威,上征于鼻,下征于腹,是为暴病,顷之亡阳而卒死耳。其谓“鼻头色微黑者有水气”,又亘上句之
意,见黑虽为肾阴之色,微黑且无腹病,但主水气而非暴病也。谓“色黄者胸上有寒”,寒字《伤寒论》
中多指为痰,言胸有积痰也。谓“色白者亡血”,白者肺之色,肺主上焦以行营卫,营不充则鼻色白,故
知亡血也。谓“设微赤非时者死”,火之色归于土,何遽主死?然非其时而有其气。则火非生土之火,乃
克金之火,又主脏燥而死矣。
鼻头色黄,小便必难。(鼻头黄色,又主胸中有寒,寒则水谷不运,故小便难。)余处无恙,鼻尖青黄,其人必淋。
鼻青腹痛,舌冷者死。鼻孔忽仰,可决短期。鼻色枯槁,死亡将及。鼻冷连颐,十无一生。(鼻者
属土,而为肺气之所出入。肺胃之神机已绝,故枯槁而冷,顾其能活乎!)
If the tip of the nose is slightly black, it indicates the presence of fluid retention (Shui Qi). If the complexion appears yellow, it indicates cold in the chest. A pale complexion indicates loss of blood (Wang Xue). If a slight redness appears out of season, death will ensue.
In observing the subtle changes of facial color, nothing takes precedence over the area around Jingming (BL1) under the eyes and the Ming Tang (Bright Hall) on the nose. The classics state, "The clear spirit and five colors are the splendor of Qi." This refers to the essence of the Five Zang organs manifesting as five colors upon the face, changing within the clear spirit; one can predict in advance which color signifies auspiciousness and which signifies ominous signs. Zhang Zhongjing further elaborated on these subtleties, particularly emphasizing the importance of the central Nose Tip (Bi Zhun). Is it not because the Nose Tip corresponds to the Star of Earth (Zhen Xing) in the heavens and the Central Prison (Zhong Yu) on earth, implying that the Qi of the Liver (Wood), Lung (Metal), Kidney (Water), and Heart (Fire) must converge into the Spleen/Stomach (Earth)? He stated, "If the nose tip is green and the abdomen feels bitterly cold, death will occur." This statement is unique through the ages. Later generations often lamented the loss of the *Treatise on Acute Diseases* (*Zu Bing Lun*), making it impossible to trace its origins, yet they did not realize that this statement is indeed of major significance. It is likely that the green color of the Jueyin Liver Wood, carrying the cold power of Kidney Water, manifests upward at the nose and downward at the abdomen. This constitutes an acute disease, leading to the sudden collapse of Yang Qi and immediate death. His statement, "If the nose tip is slightly black, there is fluid retention," continues the meaning of the previous sentence. Although black is the color of Kidney Yin, if it is only slightly black and accompanied by no abdominal pathology, it primarily indicates fluid retention rather than an acute disease. His statement, "If the color is yellow, there is cold in the chest," uses the term "cold" in the *Treatise on Cold Damage* (*Shang Han Lun*) to mostly refer to phlegm, indicating accumulated phlegm in the chest. His statement, "If the color is white, there is loss of blood," notes that white is the color of the Lung. The Lung governs the Upper Jiao to circulate Ying (Nutritive) and Wei (Defensive) Qi. When Ying Qi is insufficient, the nose appears white, thus indicating loss of blood. His statement, "If it is slightly red but out of season, death will ensue," asks why fire color returning to earth would indicate death. However, if the climate does not match the season, this fire is not the warming fire that generates earth, but the scorching fire that overcomes metal, leading to dryness of the Zang organs and death.
If the nose tip is yellow, urination will certainly be difficult. (A yellow nose tip also indicates cold in the chest; cold impairs the transportation of water and grain, hence difficulty in urination.) In my clinical practice, cases with a bluish-yellow tip of the nose invariably suffer from Lin syndrome (strangury). If the nose is green, accompanied by abdominal pain and a cold tongue, death will occur. If the nostrils suddenly turn upward, the time of death can be predicted shortly. If the nose appears withered and dull, death is imminent. If the nose is cold extending to the cheeks and jaw, fewer than one in ten will survive. (The nose belongs to Earth and serves as the passage for Lung Qi. With the divine mechanism of the Lung and Stomach exhausted, the nose becomes withered and cold; how could life persist?)