寒气客于经络，血涩不通，结而成疽。五脏之气，皆出于口；十二经脉，有入齿者，有
连舌本者；荣卫之气，无处不行。虚则受邪挟毒，乘虚而入脉故也。其发口齿者，多血出不
可禁，皆死。
行疽候者，发疮小者如豆，大者如钱，往来匝身，及生面上，谓之行疽。此亦寒热客于
腠理，与血气相搏所生也。
肿起，流之血脉，而挛曲疾痛，所以发疮历年，谓之风疽。此由风湿之气，客于经络，
与气相搏所成也。
《养生方》云∶大解汗，当以粉粉身，若令自干者，成风疽也。
此由寒气客于经络，与血气相搏，血涩结而成疽也。其寒毒偏多，则气结聚而皮浓，状
如痤疖，坚如石，故谓之石疽也。
禽疽，发如胗者数十处。其得四日，肿合牢核痛，其状若变。十日可刺。其初发，身战
寒，齿如噤，欲痉。如是者，十五日死也。此是寒湿之气，客于肌肉所生也。
杼疽者，发项及两耳下。不泻，十六日死。其六日可刺。其色黑，见脓如痈者，死不可
治。人年三十、十九、二十三、三十五、三十九、五十一、五十五、六十一、八十七、九十
九，神皆在两耳下，不可见血，见血者死。此是寒湿之气客于肌肉，折于血气之所生也。
此由寒湿之气，客于皮肤，搏于津液，使血气痞涩，湿气偏多，则发水疽。其肿状如物
裹水，多发于手足，此是随肌肤虚处而发也。亦有发身体数处而壮热，遂至死。
Cold pathogenic factors invade the meridians, causing blood to become stagnant and unobstructed, condensing to form a *ju* (a deep-seated suppurative disease). The Qi of the five Zang organs ascends to the mouth; among the twelve regular meridians, some enter the teeth, and some connect to the root of the tongue; Ying (Nutritive) Qi and Wei (Defensive) Qi circulate everywhere in the body. When deficiency occurs, one is susceptible to evil pathogens and toxins, which enter the vessels taking advantage of the deficiency. Those that manifest in the mouth and teeth often involve uncontrollable bleeding and are invariably fatal.
Regarding the manifestation of Xing Ju (Migratory Ju): sores appear small as beans or large as coins, wandering around the body and appearing on the face; this is called Xing Ju. This is also generated by cold and heat pathogens lodging in the interstices (Couli), clashing with blood and Qi.
Swelling rises, flowing into the blood vessels, accompanied by spasms, curvature, and rapid pain, so the sore persists for years; this is called Feng Ju (Wind Ju). This is formed by wind-dampness pathogens lodging in the meridians, clashing with Qi. The *Yangsheng Fang* states: After profuse sweating, one should powder the body with starch; if allowed to dry naturally, it will result in Feng Ju.
This arises from cold pathogens lodging in the meridians, clashing with blood and Qi, causing blood stagnation and condensation to form a Ju. If cold toxicity is predominant, Qi knots and accumulates, thickening the skin, resembling acne or boils, hard as stone; thus it is called Shi Ju (Stone Ju).
The manifestation of Qin Ju (Bird/Poultry Ju): dozens of lesions resembling rashes appear. After four days, swelling consolidates into firm nodules with pain, and the appearance changes. It can be treated with acupuncture on the tenth day. At the initial onset, the body trembles with chills, teeth chatter as if in lockjaw, and there is a desire for spasms. In such cases, death occurs after fifteen days. This is generated by cold-dampness pathogens lodging in the muscles.
The manifestation of Zhu Ju: appears on the neck and below both ears. Without purgation, death occurs after sixteen days. Acupuncture can be performed on the sixth day. If the color is black and pus appears like an abscess, it is incurable and fatal. For individuals aged thirty, nineteen, twenty-three, thirty-five, thirty-nine, fifty-one, fifty-five, sixty-one, eighty-seven, and ninety-nine, the Shen (Spirit) resides below both ears; bloodletting must be avoided, as seeing blood leads to death. This is generated by cold-dampness pathogens lodging in the muscles and damaging blood and Qi.
This arises from cold-dampness pathogens lodging in the skin, interacting with body fluids, causing Qi and blood to become obstructed and stagnant. With dampness being predominant, Shui Ju (Water Ju) develops. The swelling resembles something wrapped in water, mostly occurring on the hands and feet; this manifests along areas where the skin and flesh are deficient. There are also cases where multiple areas of the body are affected with high fever, ultimately leading to death.