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Jue syndrome refers to coldness and reversal of the four limbs, with its pathogenesis lying in the counterflow disorder of Qi and Blood. The *Su Wen: Sheng Qi Tong Tian Lun* states: "When Yang Qi is subjected to excessive fatigue, it becomes hyperactive." If essence and Qi are exhausted and accumulate during summer, it leads to Jian Jue (Frying Jue); severe anger causes the separation of form and Qi, with blood stagnating in the upper body, leading to Bo Jue (Thinning Jue). The *Su Wen: Da Qi Lun* states: When the pulse is rapid like panting, it is called Bao Jue (Sudden Jue). The condition of "Jue Ni" (Reversal Jue) is particularly emphasized and detailed in the *Huang Di Nei Jing*. For instance, "Zu Jue" (Sudden Jue) and "Bao Jue" are general terms for Jue Ni; "Han Jue" (Cold Jue) and "Re Jue" (Heat Jue) distinguish the Yin and Yang attributes of Jue Ni; discussing whether it involves meridians and zang-fu organs helps determine the prognosis of life or death. Furthermore, the differentiation among various meridians and zang-fu organs is very clear. Later generations developed Qi Jue, Xue Jue, Jiu Jue (Alcohol Jue), Tan Jue (Phlegm Jue), Se Jue (Sexual Jue), and Shi Jue (Food Jue), all of which are based on the theoretical foundation of the *Nei Jing*.

Zhang Zhongjing’s discussion of Jue Ni in the *Shang Han Lun* differs from that in the *Nei Jing*. Zang Jue (Viscera Jue) and Hui Jue (Roundworm Jue) both belong to Shang Han (Cold Damage) syndromes. The Jue discussed in the *Nei Jing* focuses on Yuan Qi (Original Qi); therefore, Re Jue should be treated by tonifying Yin, and Han Jue by tonifying Yang. In contrast, the Jue differentiated in the *Shang Han Lun* focuses on pathogenic factors; thus, Han Jue is suitable for warming methods, while Re Jue can be treated with purgative methods. These two must not be confused. As for Shi Jue (Corpse Jue), it is a critical condition caused by sudden invasion of external pathogens. This includes improper Qi of the four seasons, as well as mountain demons, earth spirits, Wu Shi (Five Corpse Poisons), and yin charms. Upon infection, patients suddenly experience coldness and reversal of the limbs, cold and shivering skin, blue-black complexion, loss of mental control, clenched jaws with delirious speech, phlegm-saliva obstruction, dizziness, falling, and unconsciousness. This is called Fei Shi (Flying Corpse) or Zu Jue, and acupuncture is appropriate. If moxibustion is used, Qin Chengzu’s "Moxa Ghost Method" and Hua Tuo’s "Rescuing Yang Collapse Method" are considered optimal.

Acupoints for treating coldness and reversal of Qi: Qihai (CV 6), Shenshu (BL 23), Ganshu (BL 18), Yangxi (LI 5), Renzhong (GV 26), Danzhong (CV 17), Baihui (GV 20).
One method: Use a string to measure around the left arm of males or the right arm of females at the wrist. Extend the string downward from Dazhui (GV 14) to the middle of the spine. The point where the end of the string falls is the target acupoint. Moxibustion of 21 cones is applied here. This treats Shi Jue due to sudden collapse and Qi collapse.
Related acupoints: Baihui (GV 20), Renzhong (GV 26), Hegu (LI 4), Jianshi (PC 5), Qihai (CV 6), Guanyuan (CV 4).
Bian Que treated the illness of the Crown Prince of Guo by applying alternating hot compresses to the lower sides of the ribs after selecting points from the Three Yang and Five Hui, resulting in immediate recovery.

For Kidney Jue causing headache, tendon spasm, and aversion to lying down:
Guanyuan (CV 4) [Moxibustion 100 cones].

For Su Wu (Sudden Fright/Infestation):
Jianjing (GB 21), Juque (CV 14), Shuigou/Govind (GV 26) [Small cone, 3 cones], Shenmen (HT 7) [Small cone, 3 cones]. Additionally, for Zhong E (Infestation by Evil) and similar conditions [The acupoint is located three cun behind the nipple, left side for males, right side for females].

For Yin Jue causing straightening of the calves:
Zhaohai (KI 6), Yanglingquan (GB 34).

For Gui Mei Hu Huo (Spirit Possession/Delirium):
Gui Ku (Extra Point). Method: Bind the thumbs of both hands together. Place moxa cones on the four fleshy areas behind the nail angles of the thumbs, straddling the seams. Fire them. The patient will reportedly say "I am leaving myself," indicating efficacy.

Symptoms include cyanotic face, abdominal pain, vomiting, diarrhea, curled tongue, retracted scrotum, cyanosis of fingernails and lips, hardness and fullness below the heart, incessant cold sweat, ice-cold limbs, Jue Ni coma with unconsciousness, and absent/faint pulse:
Qihai (CV 6) [Located 1.5 cun below the umbilicus], Dantian (CV 4 variant) [Located 2 cun below the umbilicus], Guanyuan (CV 4) [Located 3 cun below the umbilicus]. Apply large moxa cones, 14 cones. If hands and feet become warm, pulse returns, consciousness is restored, and sweating occurs (or no sweat but warmth), survival is possible. If limbs remain cold, consciousness is not restored, and pulse is absent, death ensues.

Heatstroke causing coma:
Symptoms manifest as sudden collapse and loss of consciousness, known as Shu Feng (Summerwind). Generally, there are two pathways: Excess and Deficiency. Excess is Phlegm-Excess. Normally, phlegm fills the meridians; upon contracting intense summer heat, phlegm obstructs Qi, causing sudden collapse and salivation. This is the most severe combination of Dampness and Heat. It is advisable to first induce vomiting to expel phlegm, then clear summer heat, which is relatively easy. Deficiency is Yang-Deficiency. Normally, Yang Qi is weak and Yin-Cold dominates; upon contracting summer heat, pathogens invade the deficiency. This is a Dampness disease originating from Cold-Deficiency. It requires restoring Yang while clearing summer heat, making it difficult to treat. Danxi argued that in midsummer when fire is abundant enough to melt stone and boil metal, how could there be Yin-Cold? His view leans towards Heat, suggesting cooling treatments and implying moxibustion is unsuitable. However, this is not entirely true. Heaven has unseasonal Qi, so humans have unseasonal diseases. Summer may follow Autumn’s climate, Winter may follow Spring’s; Cold symptoms in heat, Heat symptoms in cold often occur. Moreover, Summer Heat is externally Yang but internally Yin. Those infected suffer sudden onset, greasy complexion, cold sweat, slightly cold limbs, vomiting or diarrhea, wheezing or fullness, even unconsciousness. Moxibustion is suitable for Baihui (GV 20), Zhongwan (CV 12), Zusanli (ST 36), Pishu (BL 20), Hegu (LI 4), Renzhong (GV 26), Yinggu (KI 10), Sanyinjiao (SP 6).

Summerheat-induced Cholera:
Bailao (EX-B 3), Weizhong (BL 40), Hegu (LI 4), Quchi (LI 11), Zusanli (ST 36), Shixuan (EX-UE 8).