云是野狐尿棘刺头，有人犯之者，则多中于人手指、足指，肿痛 热。有端居不出而着
此毒者，则不必是狐尿刺也，盖恶毒瓦斯耳。故方亦云恶刺毒者也。
此则树上蚝虫耳。以其毛刺能螫人，故名蚝虫。此毒盖轻，不至深毙，然亦甚痛，螫处
作轸起者是也。
蠼 虫，云能尿人影，即令所尿之处，惨痛如芒刺，亦如蚝虫所螫，然后起细 瘰，作
聚如茱萸子状。其 瘰遍赤，中央有白脓如粟粒，亦令人皮肉拘急，恶寒壮热。极者连起，
多着腰胁及胸，若绕腰匝遍者，重也。
凡古井、冢及深坑阱中，多有毒瓦斯，不可辄入，五月、六月间最甚，以其郁气盛故也。
若事辄必须入者，先下鸡、鸭毛试之，若毛旋转不下，即是有毒，便不可入。
夫被金刃所伤，其疮多有变动。若按疮边干急，肌肉不生，青黄汁出，疮边寒清，肉消
臭败，前出赤血，后出黑血，如熟烂者，及血出不止，白汁随出，如是者多凶。若中络脉、
髀内、阴股、天聪、眉角，横断腓肠，乳上及与鸠尾、攒毛、小腹，尿从疮出，气如贲豚，
及脑出，诸疮如是者，多凶少愈。
诊金疮，血出太多，其脉虚细者生，数实大者死；小者生，浮大者死。所伤在阳处者，
去血四五斗，脉微缓而迟者生，急疾者死。
据说这是野狐尿过的棘刺扎伤头部，有人触犯它，通常会被刺伤手指或脚趾，出现肿痛、发热等症状。如果长期静坐不出门而染上这种毒气，则不一定是被狐尿刺所伤，这其实是恶毒的瘴气所致。所以医方中也称之为“恶刺毒”。
这实际上是树上的蚝虫（一种毛虫）。因为它的毛刺能蜇人，所以名叫蚝虫。这种毒性较轻，不至于导致深度死亡，但疼痛非常剧烈，被蜇处会出现风团样皮疹。
蠼螋虫（此处指某种毒虫），传说它能通过尿液影响人的影子，被其尿液沾染之处，会感到剧烈疼痛如芒刺扎入，也像被蚝虫蜇伤一样，随后起细小的结节，聚集成像吴茱萸子形状。这些结节遍布发红，中央有米粒大小的白色脓头，也会使人皮肤肌肉拘挛紧急，伴有恶寒和高热。病情严重的会连片发作，多发生在腰胁及胸部，如果环绕腰部一周，则病情较重。
凡是古井、坟墓以及深坑陷阱中，多有有毒气体，不可随意进入，五月、六月间最为严重，因为此时郁积之气旺盛的缘故。如果事情必须进入，先投入鸡鸭羽毛测试，如果羽毛旋转不下沉，说明有毒，便不可进入。
被金属利器所伤，伤口往往多有变化。如果按压疮口边缘干燥紧绷，肌肉不生长，流出青黄色汁液，疮口边缘感觉寒冷清冷，肌肉消瘦腐烂发臭，起初流出赤血，后来流出黑血，状如熟烂之物，以及出血不止，白汁随之流出，这种情况大多凶险。如果损伤到络脉、大腿内侧、阴股、天聪穴、眉角，横断腓肠肌，乳房上方及鸠尾穴、阴毛处、小腹，尿液从伤口流出，气息如奔豚病般上冲，以及脑髓外溢，各种伤口出现上述情况的，大多凶险少愈。
诊察金疮，如果出血过多，脉象虚细的预后良好，脉象数实大的预后不良；脉象小的预后良好，脉象浮大的预后不良。受伤在阳经部位者，失血四五斗，脉象微缓而迟的预后良好，脉象急疾的预后不良。
金疮出血不止，脉象大而有力的，三七日后死亡。金疮出血无法止住，先前流赤血后流黑血，或者流黄白之血，肌肉腐败发臭，患处寒冷僵硬紧急的，伤口难以愈合，也会导致死亡。
It is said to be caused by thorns pricked by a wild fox's urine. If one encounters it, it often injures the fingers or toes, causing swelling, pain, and heat. If one remains seated indoors for a long time and contracts this toxin, it may not necessarily be from a fox-urine thorn; rather, it is likely due to malignant toxic vapors. Therefore, medical texts also refer to it as "malignant thorn poison."
This is actually a type of hairy caterpillar (Oyster Worm) found on trees. It is named so because its bristles can sting people. The toxicity is relatively mild and does not usually lead to deep-seated death, but the pain is severe. The stung area develops urticarial wheals.
The Qu Su insect (a type of venomous insect) is said to affect a person's shadow through its urine. Wherever the urine touches, it causes intense pain like thorn pricks, similar to an Oyster Worm sting, followed by the appearance of small nodules clustered like Chinese bayberry fruits. These nodules become red all over, with a millet-sized white pus head in the center. It also causes skin and muscle spasms, accompanied by aversion to cold and high fever. In severe cases, they appear continuously, mostly affecting the waist, flanks, and chest. If they encircle the waist completely, the condition is serious.
Ancient wells, tombs, and deep pits often contain toxic gases and should not be entered casually. This is most prevalent during May and June due to the accumulation of stagnant qi. If entry is necessary, first drop chicken or duck feathers to test: if the feathers spin and do not sink, it indicates toxicity, and one must not enter.
Wounds inflicted by metal blades often exhibit various changes. If pressing the wound edges reveals dryness and tension, lack of muscle regeneration, discharge of greenish-yellow fluid, cold and clear sensation at the edges, wasting and putrefaction of flesh, initial bright red blood followed by dark black blood resembling cooked rot, continuous bleeding with accompanying white fluid, these signs indicate a poor prognosis. Injuries to collaterals, inner thighs, groin, Tiāncōng acupoint, eyebrow corners, transverse severing of the gastrocnemius muscle, above the breasts, Jiūwěi acupoint, pubic region, or lower abdomen, where urine leaks from the wound, breath rises like Ben Tun disease (fleeing pig), or brain matter protrudes, are generally fatal with few recoveries.
In diagnosing metal wounds, excessive bleeding with a deficient and fine pulse suggests survival; a rapid, full, and large pulse suggests death. A small pulse suggests survival; a floating and large pulse suggests death. For injuries in Yang regions, losing four or five dou of blood with a slightly slow and delayed pulse suggests survival; a rapid and urgent pulse suggests death.
For metal wounds with unceasing bleeding, a large pulse indicates death within twenty-one days. If bleeding cannot be stopped, with initial bright red blood turning dark, or yellow/white discharge, putrefied and foul-smelling muscles, and cold, stiff, and tense tissues, the wound is difficult to heal and will likely result in death.