秦子曰∶呕以声响名，吐以吐物言；有声无物曰呕，有物无声曰吐；有声有物曰呕吐。
皆阳明胃家所主。有外感，有内伤。
【风气呕吐之症】偶遇风冷，即发呕吐，头额疼痛，面赤面热，风入阳明，胃家呕吐症
【风气呕吐之因】或当风取凉，风冷入胃；或胃中饥饿，风邪乘虚而入，如此者皆令呕吐也。
【风气呕吐之脉】脉多见浮。浮紧风寒，浮数风热，浮滑风痰，浮濡风湿。
【风气呕吐之治】散风清胃，防葛平胃散，兼痰者，防葛二陈汤。
防葛平胃散
防风 葛根 苍术 浓朴 广皮 甘草
风寒加生姜，风热加山栀、黄连、竹茹。
防葛二陈汤
防风 干葛 半夏 白茯苓 甘草 广皮
风寒加生姜，风热加山栀、黄连、竹茹。
【寒气呕吐之症】偶遇寒冷，顿发呕吐，胸前绵绵而来，身无内热，小便清白，大便通
【寒气呕吐之因】胃气素寒，又值时令之寒，偶或感入，则寒气伤胃而为呕吐矣。
【寒气呕吐之脉】多见弦紧，或见迟缓，或见沉细，甚则沉伏。
【寒气呕吐之治】散寒温胃，理中汤、姜桂六君子汤，甚者四逆汤；若伤寒呕吐，另具
理中汤
人参 白术 干姜 炙甘草
寒甚加附子。
治中汤 即理中汤，加青皮、广皮。
姜桂六君子汤 即六君子汤，加干姜、肉桂。
四逆汤
甘草 干姜 熟附子
Qin Zi stated: "Ou" (vomiting with sound) is named for the sound, while "Tu" (spitting up) refers to the expulsion of matter; vomiting with sound but no matter is called Ou, spitting up matter without sound is called Tu, and both sound and matter are expelled together is called Ou-Tu.
These conditions are primarily governed by the Yangming Stomach organ system. Etiologies include external contraction and internal injury.
[Symptoms of Wind-Induced Vomiting] Upon accidental exposure to wind-cold, vomiting occurs immediately, accompanied by pain in the forehead, redness and heat in the face. This indicates wind pathogen invading the Yangming channel, causing stomach vomiting symptoms.
[Etiology of Wind-Induced Vomiting] Some cases result from cooling off in the wind, allowing wind-cold to enter the stomach; others occur when the stomach is empty due to hunger, allowing wind pathogen to invade via deficiency. Such circumstances all lead to vomiting.
[Pulse of Wind-Induced Vomiting] The pulse is predominantly Floating (Fu). A Floating-Tight (Fu Jin) pulse indicates Wind-Cold; a Floating-Rapid (Fu Shu) pulse indicates Wind-Heat; a Floating-Slippery (Fu Hua) pulse indicates Wind-Phlegm; a Floating-Soft (Ru) pulse indicates Wind-Dampness.
[Therapeutic Approach for Wind-Induced Vomiting] The treatment principle is to disperse wind and clear the stomach, using Fangge Pingwei San. If phlegm is present, use Fangge Erchen Tang.
Fangge Pingwei San (Wind-Dispersing and Ge Gen Decoction for Regulating the Stomach)
Ingredients: Fangfeng (Saposhnikovia Root), Gegen (Pueraria Root), Cangzhu (Atractylodis Rhizoma), Nongpu (Magnolia Bark), Guangpi (Citri Reticulatae Pericarpium), Gancao (Glycyrrhizae Radix et Rhizoma).
For Wind-Cold syndrome, add Shengjiang (Zingiberis Rhizoma Recens); for Wind-Heat syndrome, add Shanzhi (Gardeniae Fructus), Huanglian (Coptidis Rhizoma), and Zhuru (Bambusae Caulis in Taenia).
Fangge Erchen Tang (Wind-Dispersing and Ge Gen Decoction for Eliminating Phlegm)
Ingredients: Fangfeng (Saposhnikovia Root), Gan Ge (Pueraria Root), Banxia (Pinelliae Rhizoma), Bai Fuling (Poria), Gancao (Glycyrrhizae Radix et Rhizoma), Guangpi (Citri Reticulatae Pericarpium).
For Wind-Cold syndrome, add Shengjiang (Zingiberis Rhizoma Recens); for Wind-Heat syndrome, add Shanzhi (Gardeniae Fructus), Huanglian (Coptidis Rhizoma), and Zhuru (Bambusae Caulis in Taenia).
[Symptoms of Cold-Induced Vomiting] Upon accidental exposure to cold, sudden vomiting occurs. There is a lingering discomfort in the chest area, no internal heat in the body, clear urine, and normal bowel movements.
[Etiology of Cold-Induced Vomiting] The patient's stomach qi is inherently cold. When exposed to seasonal cold, the cold pathogen invades, injuring the stomach and causing vomiting.
[Pulse of Cold-Induced Vomiting] The pulse is predominantly String-Tight (Xian Jin), or may appear Slow-Relaxed (Chi Huan), or Deep-Fine (Chen Xi). In severe cases, it may be Deep-Hidden (Chen Fu).
[Therapeutic Approach for Cold-Induced Vomiting] The treatment principle is to dispel cold and warm the stomach, using Lizhong Tang, Jianggui Liujunzi Tang, or Sini Tang for severe cases. For vomiting caused by Cold Damage (Shanghan), specific treatments are detailed elsewhere.
Lizhong Tang (Regulate the Middle Decoction)
Ingredients: Renshen (Ginseng Radix), Baizhu (Atractylodis Macrocephalae Rhizoma), Ganjiang (Zingiberis Rhizoma), Zhi Gancao (Prepared Glycyrrhizae Radix et Rhizoma).
If cold is severe, add Fuzi (Aconiti Lateralis Radix Praeparata).
Zhizhong Tang is identical to Lizhong Tang, plus Qingpi (Aurantii Fructus Immaturus Pericarpium) and Guangpi (Citri Reticulatae Pericarpium).
Jianggui Liujunzi Tang (Ginger and Cinnamon Six-Gentlemen Decoction) is identical to Liujunzi Tang, plus Ganjiang (Zingiberis Rhizoma) and Rougui (Cinnamomi Cortex).
Sini Tang (Reverse the Collapse Decoction)
Ingredients: Gancao (Glycyrrhizae Radix et Rhizoma), Ganjiang (Zingiberis Rhizoma), Shu Fuzi (Prepared Aconiti Lateralis Radix).