《灵枢》又云∶身有所伤血出多，反中风寒，若有所坠堕，四肢懈惰不收，名曰体惰。
取小腹脐下三结交。阳明、太阴也，脐下三寸关元也。（寒热篇 三结交者，即关元穴是也）
刘宗浓曰∶打扑金创损伤，是不因气动而病生于外，外受有形之物所伤，乃血肉筋
骨受病，非如六淫七情为病，有在气、在血之分也。所以损伤一证，专从血论，但须分
其有瘀血停积，而亡血过多之证。盖打扑坠堕皮不破而内损者，必有瘀血，若金创伤皮
出血，或致亡血过多，二者不可同法而治。有瘀血者，宜攻利之，若亡血者，兼补而行之。
又察其所伤，有上下轻重浅深之异，经络气血多少之殊。唯宜先逐瘀血，通经络，和血
止痛，然后调气养血，补益胃气无不效也。顷见围城中，军士被伤，不问头面、手足、胸
背轻重，医者例以大黄等药利之；后大黄缺少，甚者遂以巴豆代之，以为不于初时泻去
毒瓦斯，后则多致危殆，至于略伤手指，亦悉以药利之。殊不知大黄之药惟与有瘀血者相
宜，其有亡血过多，元气胃气虚弱之人，不可服也；其巴豆大热有毒，止能破坚逐积，用
于此疾，尤非切当。所以有服下药过后，其脉愈见坚大，医者不察，又以为瘀血未尽而
后下之，因而夭折人命，可不慎欤。
《灵枢》又说：身体受到外伤且出血较多，反而遭受风寒侵袭；或者从高处坠落跌伤，导致四肢懈怠无力、无法收持，这种情况称为“体惰”。
治疗应取小腹脐下三结交穴。所谓三结交，是指足阳明胃经与足太阴脾经相交之处，即脐下三寸的关元穴。（出自《寒热篇》，注者说明：三结交就是关元穴）
刘宗浓说：被打、扑击以及金刃创伤等损伤，是因为没有因气机逆乱而在体内发病，而是外部有形物体造成的伤害，属于血肉筋骨受损，不像六淫（风、寒、暑、湿、燥、火）和七情（喜、怒、忧、思、悲、恐、惊）致病那样，有在气分或在血分的区别。所以损伤这一类病症，专门从血的角度来论述，但必须区分是有瘀血停滞积聚，还是失血过多的证候。大致而言，被打扑或坠堕导致皮肤未破而内部受损的，必然有瘀血；如果是金刃创伤导致皮肤破裂出血，则可能导致失血过多。这两种情况不能用同一种方法治疗。对于有瘀血的，适宜采用攻逐利下的方法；对于失血过多的，则应在补益的同时配合行血之法。
另外要观察受伤的部位，有上下、轻重、浅深的不同，经络中气血多少也有差异。治疗上应当先驱逐瘀血，疏通经络，调和血液以止痛，然后再调理气机、滋养血液，补益胃气，这样没有不奏效的。
近来我在被围困的城中看到，士兵受伤后，无论头部、面部、手足、胸背何处受伤，也不论伤势轻重，医生们都一律使用大黄等药物进行泻下治疗；后来因为大黄短缺，严重的甚至用巴豆代替，认为如果在初期不泻去毒邪，后来就会多导致危重局面，以至于只是轻微的手指擦伤，也全部用药泻下。他们不知道大黄的药性只适合有瘀血的人服用，而对于失血过多、元气和胃气虚弱的人，是不可服用的；巴豆大热且有剧毒，只能破除坚积、驱逐积滞，用于这种疾病尤其不恰当。因此，有些患者服用泻下药之后，脉象反而变得更加坚实洪大，医生们不加考察，又认为是瘀血未尽而再次使用泻下药，从而导致人命夭折，这能不谨慎吗？
The *Ling Shu* (Spiritual Pivot) also states: When the body suffers trauma with excessive blood loss, it may subsequently be affected by wind-cold; or if one falls from a height, resulting in flaccidity and weakness of the four limbs that cannot be controlled, this condition is termed "Ti Duo" (Body Languor).
Treatment should target the San Jie Jiao (Triple Union Intersection) located below the umbilicus on the lower abdomen. The San Jie Jiao refers to the intersection of the Foot-Yangming Stomach Channel and the Foot-Taiyin Spleen Channel, which is the Guanyuan (CV-4, Gate of Origin) acupoint, three cun below the umbilicus. (From the chapter "Han Re Pian"; the commentator notes that San Jie Jiao is indeed the Guanyuan acupoint.)
Liu Zongnong stated: Injuries caused by beating, striking, or metal wounds are not diseases arising internally due to qi disturbance, but rather injuries inflicted by external有形 (material/physical) objects, damaging flesh, blood, sinews, and bones. This differs from diseases caused by the Six Excesses (Wind, Cold, Summerheat, Dampness, Dryness, Fire) and Seven Emotions, which have distinctions between being in the Qi level or the Blood level. Therefore, injury syndromes are specifically discussed from the perspective of Blood. However, one must distinguish between cases with stagnant blood accumulation and those with excessive blood loss. Generally, injuries from beating or falling where the skin remains intact but internal damage occurs will inevitably involve stagnant blood. Conversely, metal wounds that break the skin and cause bleeding may lead to excessive blood loss. These two conditions cannot be treated with the same method. For cases with stagnant blood, purgative methods to remove stasis are appropriate; for cases with excessive blood loss, tonification should be combined with blood-invigorating methods.
Furthermore, one must observe the site of injury, noting differences in location (upper/lower), severity (light/heavy), and depth (superficial/deep), as well as variations in the abundance of Qi and Blood within different meridians. Treatment should first focus on expelling stagnant blood, unblocking the meridians, harmonizing the Blood to relieve pain, and only then regulating Qi, nourishing Blood, and tonifying Stomach Qi. Such an approach is invariably effective.
Recently, in a besieged city, I observed that when soldiers were injured, regardless of whether the wound was on the head, face, hands, feet, chest, or back, and regardless of severity, physicians uniformly administered purgatives such as Radix et Rhizoma Rhei (Dahuang, 大黄). Later, due to a shortage of Dahuang, even more severe cases substituted it with Fructus Crotonis Tiglii (Badou, 巴豆), under the belief that failing to purge toxic pathogens initially would lead to critical danger later. Consequently, even minor finger injuries were treated with purgatives. They failed to realize that Radix et Rhizoma Rhei is suitable only for those with stagnant blood; it is contraindicated for those with excessive blood loss and deficient Yuan Qi (Original Qi) and Stomach Qi. Fructus Crotonis Tiglii is extremely hot and toxic, capable only of breaking firm accumulations and driving out stagnation; its use for these injuries is particularly inappropriate. Therefore, after patients took purgatives, their pulses often became firmer and larger. Physicians, failing to examine this correctly, assumed the stagnant blood was not yet fully expelled and administered further purgatives, thereby causing premature death. Can one not be cautious?