肝热病者先左颊赤，肺热病者先右颊赤，心热病者颜先赤，（颜，额也。）肾热病者颐先赤，
（颐，颊也。）脾热病者鼻先赤。（土主中央。）病虽未发，见赤色刺之，名曰治未病。
肝热病者，先小便黄，腹痛多卧身热。热争则狂言及惊，胁满痛，手足躁，不
得安卧，庚辛甚，甲乙大汗，气逆则庚辛死。刺足厥阴、少阳。其逆则头痛 ，脉引冲头也。
心热病者，先不乐，数日乃热。热争则卒心痛，烦闷喜呕，头痛面赤无汗，壬癸甚，丙丁大汗，
气逆则壬癸死。刺手少阴、太阳。
脾热病者，先头重颊痛，心烦颜青，欲呕身热。热争则腰痛，不可俯仰，腹满泄，两颔痛，甲
乙甚，戊己大汗，气逆则甲乙死。刺足太阴、阳明。
肺热病者，先淅然厥，起毫毛，恶风寒，舌上黄身热。热争则喘咳，痛起走胸膺背，不得太息，
头痛不任，汗出而恶寒，丙丁甚，庚辛大汗，气逆则丙丁死。刺手太阴、阳明，出血如豆大，立已。
肾热病者，先腰痛 酸，苦渴数饮水身热。热争则项痛 澹澹然，戊己甚，壬癸大汗，气逆
则戊己死。刺足少阴、太阳。诸汗者，至其所胜日汗出也。
庞曰∶五种热病，肝肾二脏有逆证，心脾肺三脏亡逆证。凡五种热病，二三日逢克未为逆，忌
在五六日也。
《素问》记载了五种热病：肝热病患者，首先左脸颊发红；肺热病患者，首先右脸颊发红；心热病患者，首先额头（颜，即额部）发红；肾热病患者，首先下巴（颐，即颊部下方）发红；脾热病患者，首先鼻子发红。（五行中土居中央，对应鼻。）即使疾病尚未发作，只要见到赤色就进行针刺治疗，这叫做“治未病”。
肝热病患者，首先小便发黄，腹痛，嗜睡，身体发热。当邪气与正气相争时，会出现胡言乱语和惊厥，胁肋部胀满疼痛，手足躁动不安，无法躺卧休息。病情在庚辛日加重，在甲乙日大汗出而解，若出现气逆证则在庚辛日死亡。治疗应针刺足厥阴肝经和足少阳胆经。若发生气逆，则会导致头痛，这是因为经脉之气上冲头部所致。
心热病患者，首先情绪不悦，几天后才发热。当邪气与正气相争时，突然心痛，烦闷喜欢呕吐，头痛，面色发红且无汗。病情在壬癸日加重，在丙丁日大汗出而解，若出现气逆证则在壬癸日死亡。治疗应针刺手少阴心经和手太阳小肠经。
脾热病患者，首先头重，脸颊疼痛，心烦，面色发青，想呕吐，身体发热。当邪气与正气相争时，腰痛，不能前后俯仰，腹部胀满腹泻，两侧下颌疼痛。病情在甲乙日加重，在戊己日大汗出而解，若出现气逆证则在甲乙日死亡。治疗应针刺足太阴脾经和足阳明胃经。
肺热病患者，首先感到寒冷战栗，毫毛竖起，怕风怕冷，舌苔黄，身体发热。当邪气与正气相争时，气喘咳嗽，疼痛游走于胸膺背部，呼吸不畅，头痛难以忍受，出汗且怕冷。病情在丙丁日加重，在庚辛日大汗出而解，若出现气逆证则在丙丁日死亡。治疗应针刺手太阴肺经和手阳明大肠经，放出如豆粒大小的血，症状立即停止。
肾热病患者，首先腰部酸痛，口干苦渴，频繁饮水，身体发热。当邪气与正气相争时，颈部疼痛，感觉动荡不适。病情在戊己日加重，在壬癸日大汗出而解，若出现气逆证则在戊己日死亡。治疗应针刺足少阴肾经和足太阳膀胱经。所有热病的汗出，都是在其所胜之日（即克我之日或我克之日，此处指病情缓解之日）发生的。
庞安石说：这五种热病中，肝、肾两脏有气逆的危重证候，心、脾、肺三脏没有气逆的危重证候。凡是五种热病，如果在发病二三天遇到相克的日子还不算逆证，但要忌讳在五六日遇到相克的日子。
The *Suwen* (Basic Questions) records five types of heat diseases: Patients with Liver Heat Disease first exhibit redness on the left cheek; patients with Lung Heat Disease first exhibit redness on the right cheek; patients with Heart Heat Disease first exhibit redness on the forehead (Yan, meaning the forehead); patients with Kidney Heat Disease first exhibit redness on the chin (Yi, meaning the lower part of the cheek/jaw); patients with Spleen Heat Disease first exhibit redness on the nose. (In Five Elements theory, Earth governs the center.) Even if the disease has not yet fully manifested, puncturing upon seeing redness is called "treating before disease arises" (Zhi Wei Bing).
Patients with Liver Heat Disease first present with yellow urine, abdominal pain, lethargy, and body fever. When pathogenic heat contends with healthy Qi (Re Zheng), they may manifest delirious speech and惊厥 (convulsions), distension and pain in the hypochondrium, restlessness of the hands and feet, and inability to lie down comfortably. The condition worsens on Geng-Xin days, resolves with profuse sweating on Jia-Yi days, and death occurs due to Qi reversal on Geng-Xin days. Treatment involves puncturing the Foot-Jueyin (Liver) and Foot-Shaoyang (Gallbladder) meridians. If Qi reverses, it leads to headache, as the meridian Qi rushes upward to the head.
Patients with Heart Heat Disease first present with dissatisfaction or depression, developing fever after several days. When pathogenic heat contends with healthy Qi, they experience sudden heart pain, oppression, a tendency to vomit, headache, facial redness, and absence of sweat. The condition worsens on Ren-Gui days, resolves with profuse sweating on Bing-Ding days, and death occurs due to Qi reversal on Ren-Gui days. Treatment involves puncturing the Hand-Shaoyin (Heart) and Hand-Taiyang (Small Intestine) meridians.
Patients with Spleen Heat Disease first present with heavy head, cheek pain, irritability, bluish-green complexion, nausea, and body fever. When pathogenic heat contends with healthy Qi, they experience lower back pain, inability to bend forward or backward, abdominal fullness, diarrhea, and pain in both mandibles. The condition worsens on Jia-Yi days, resolves with profuse sweating on Wu-Ji days, and death occurs due to Qi reversal on Jia-Yi days. Treatment involves puncturing the Foot-Taiyin (Spleen) and Foot-Yangming (Stomach) meridians.
Patients with Lung Heat Disease first present with chills, erection of fine hairs, aversion to wind and cold, yellow tongue coating, and body fever. When pathogenic heat contends with healthy Qi, they experience wheezing and coughing, pain wandering across the chest, epigastrium, and back, difficulty taking deep breaths, unbearable headache, sweating, and aversion to cold. The condition worsens on Bing-Ding days, resolves with profuse sweating on Geng-Xin days, and death occurs due to Qi reversal on Bing-Ding days. Treatment involves puncturing the Hand-Taiyin (Lung) and Hand-Yangming (Large Intestine) meridians, releasing blood drops the size of a bean, which stops the symptoms immediately.
Patients with Kidney Heat Disease first present with soreness and pain in the lower back, bitter dry mouth with frequent desire to drink, and body fever. When pathogenic heat contends with healthy Qi, they experience neck pain and a sensation of internal turbulence. The condition worsens on Wu-Ji days, resolves with profuse sweating on Ren-Gui days, and death occurs due to Qi reversal on Wu-Ji days. Treatment involves puncturing the Foot-Shaoyin (Kidney) and Foot-Taiyang (Bladder) meridians. All such sweating occurs on the days when the affected organ's element is overcome by or overcomes others (days of resolution).
Pang Anshi stated: Among these five heat diseases, the Liver and Kidney organs have adverse conditions (Qi reversal), while the Heart, Spleen, and Lung organs do not have adverse conditions. For all five heat diseases, encountering an overcoming day within two to three days of onset is not considered adverse, but one must beware of encountering an overcoming day on the fifth or sixth day.