脉有七情之伤,而为九气之别∶怒伤于肝,脉促而气上冲;惊伤于胆,脉气乱而动掣;过喜伤心,
脉散而气缓;过思伤脾,脉短而气结;忧伤肺,脉涩而气沉;恐伤肾,脉沉而气怯;伤于寒者脉迟,其
人气收;伤于热者脉数,其人气泄。故脉促而人气消,因悲伤而心系掣也。
凡众人之脉,有素大素小,素阴素阳者,此赋自先天。若邪变之脉,有倏缓倏疾,乍进乍退者,此
病之骤至,脉随气见也。故凡诊脉者,必须先识脏脉,而后可以察病脉;先识常脉,而后可以察变脉。
于常脉中可察人之器局寿夭,于变脉中可察人之疾病死生。
脉言浮表沉里,数热迟寒,弦强为实,微细为虚,是固然矣。然疑似中尤有真辨,不可不察也。
如浮为在表,而凡阴虚血少,中气亏损者,脉必浮而无力,是浮不可概言表。沉为在里,而凡表邪初感,
寒束皮毛,脉不能达,则必沉紧,是沉不可概言里,数虽为热,而真热者未必数,凡虚损之症,阴
阳俱困,虚甚者数必甚,是数不可概言热。迟虽为寒,然伤
寒初退,余热未清,脉多迟滑,是迟不可概言寒。弦强类实,而真阴虚损,胃气大亏,阴阳关格等证,
脉必豁大而弦强,是强不可概言实。微细类虚,而凡痛极,气闭营卫,壅滞不通者,脉必伏匿,是微不可
概言虚。凡诸脉之中,皆有疑似,皆有真辨,诊家大要,当先识此。
The pulse is injured by the Seven Emotions (Joy, Anger, Worry, Pensiveness, Sorrow, Fear, Fright), manifesting as distinct variations of the Nine Qi (Qi Rising, Qi Slackening, Qi Knotting, Qi Consuming, Qi Descending, Qi Disorder, Qi Contracting, Qi Leaking, Qi Exhaustion): Anger injures the Liver, resulting in a rapid and surging pulse with Qi rushing upward; Fright injures the Gallbladder, causing chaotic pulse Qi with twitching and jerking; Excessive Joy injures the Heart, leading to a scattered pulse with slackened Qi; Excessive Pensiveness injures the Spleen, resulting in a short pulse with knotted Qi; Sorrow injures the Lung, causing a choppy pulse with sinking Qi; Fear injures the Kidney, leading to a deep pulse with timid Qi; Injury by Cold results in a slow pulse with contracted Qi; Injury by Heat results in a rapid pulse with leaking Qi. Therefore, a rapid pulse indicates consumption of Qi due to sorrow causing tethering and pulling of the Heart system.
Generally, people's pulses may be inherently large or small, inherently Yin or Yang, which are endowments from congenital origins. If the pulse changes due to pathogenic factors, appearing suddenly slow or fast, advancing or retreating abruptly, this indicates the sudden arrival of disease, where the pulse manifests according to Qi dynamics. Thus, whoever examines the pulse must first recognize the normal pulses of the Zang organs before discerning pathological pulses; one must first understand normal pulses before identifying altered pulses. From normal pulses, one can observe an individual's constitutional framework and longevity; from altered pulses, one can assess disease conditions and life-and-death prognoses.
It is stated that floating pulses indicate exterior syndromes, deep pulses indicate interior syndromes, rapid pulses indicate heat, slow pulses indicate cold, wiry and forceful pulses indicate excess syndromes, and minute and fine pulses indicate deficiency syndromes; this is indeed correct. However, amidst similarities and ambiguities, true distinctions must be made and carefully examined. For instance, while floating pulses generally indicate the exterior, in cases of Yin deficiency and blood insufficiency, or middle Qi depletion, the pulse will necessarily be floating but weak; thus, a floating pulse cannot be universally categorized as an exterior syndrome. While deep pulses generally indicate the interior, in initial exterior pathogen invasion where Cold binds the skin and hair pores preventing pulse Qi from reaching the surface, the pulse will necessarily be deep and tight; thus, a deep pulse cannot be universally categorized as an interior syndrome. Although rapid pulses indicate heat, true heat syndromes do not always present with rapid pulses; in deficiency consumptive diseases where both Yin and Yang are exhausted, severe deficiency leads to severe rapidity; thus, a rapid pulse cannot be universally categorized as heat. Although slow pulses indicate cold, after the initial retreat of Cold Damage with residual heat remaining, the pulse is often slow and slippery; thus, a slow pulse cannot be universally categorized as cold. Wiry and forceful pulses resemble excess, but in cases of true Yin deficiency, severe stomach Qi depletion, or Yin-Yang separation syndromes, the pulse will necessarily be expansive and wiry-forceful; thus, wiry-forcefulness cannot be universally categorized as excess. Minute and fine pulses resemble deficiency, but in cases of extreme pain, Qi closure blocking Ying and Wei, and stagnation obstructing flow, the pulse will necessarily be hidden and concealed; thus, minute-fineness cannot be universally categorized as deficiency. Among all types of pulses, there are similarities and ambiguities, as well as true distinctions; the key principle for pulse diagnosticians is to first recognize these principles.