眩晕者，眩冒而旋转不定也。如因肝风痰饮而致者，统以二陈汤加味主之。如因虚而致者，
以一味鹿茸酒主之。如因火亢而致者，以一味大黄散主之。
二陈汤
半夏（三钱） 陈皮（三钱） 茯苓（三钱） 甘草（二钱炙） 水煎大半杯，温服。如属
肝风者，加防风、玉竹、天麻、钩藤。如属痰饮者，倍半夏，倍加泽泻。火盛者，加黄芩、元参。
一味鹿茸酒
鹿茸（一两） 酒煎去渣，入麝香少许服。
一味大黄散
大黄（制） 为末茶调下，每服一钱至二三钱。清宁丸亦可代之。
痰饮者，肺肾之病也。其根由于土湿，盖肺气降而化水，肾水升而化气，一自阳衰土湿，肺气壅滞不
能化水，肾水凝瘀不能化气，气不化水则郁蒸于上而为痰，水不化气则停积于下而为饮。痰饮伏留，清
道堵塞，此壅嗽发喘，息短胸满，眠食非旧，喜怒乖常，诸变证所由作也。如痰饮伏留而胀满者，以姜
苓半夏汤主之，或以小半夏加茯苓汤主之。如痰饮停滞而喘
喇者，以小青龙汤主之，或以麻黄射干汤主之。如饮积于上，气不化水，致饮留心下而化痰者，以桂苓
甘术汤主之。如饮积于下，水不化气，致饮泛胸中而化痰者，以真武汤主之。如水饮停瘀脏腑，上在胸膈，宜
泄其气分者，以十枣汤主之。下在脐腹，宜泄于水道者，以猪苓汤主之。流溢经络，宜泄于汗孔者，以五苓散主之。
如一切痰饮可吐者，以瓜蒂散主之。
姜苓半夏汤
茯苓（三钱） 泽泻（三钱） 甘草（一钱） 半夏（三钱） 杏仁（三钱） 生姜（三钱）
陈皮（三钱） 水煎大半杯，温服。如上热者，加黄芩、贝母。下寒者，佐干姜、附子。宿痰胶固难行者，加枳实开之。
小半夏加茯苓汤 （方见喘促） 小青龙汤 （方见《伤寒》） 麻黄射干汤 （方见《金匮》）
桂苓甘术汤
茯苓（四钱） 白术（三钱） 桂枝（三钱） 甘草（一钱半炙） 水煎大半杯，温服。
真武汤
茯苓（三钱） 白芍（三钱） 生姜（三钱） 白术（二钱） 附子（二钱） 水煎大半杯，温服。
十枣汤
芫花（熬） 甘遂 大戟（各等分） 异筛，秤末，合和之。水二杯，先煮大枣十枚，至七分，去
渣滓，纳药末。强人服八九分，羸人服五六分，平旦温服，若下少病不除，明日更服，加三分，利后糜粥自养。
猪苓汤（方见瘟疫）
五苓散
猪苓（十八铢） 泽泻（一两六铢） 白术（十八铢） 桂枝（半两） 茯苓（十八铢） 共为末
，以白饮和服三钱，日三服，多饮暖水，汗出愈。（按∶白饮即白开水）
瓜蒂散
瓜蒂 赤小豆 上各等分为末，取二钱，以香豉一撮，用热汤煮作稀糜，和药散服之。不吐者，
少少加，得快吐乃止。诸亡血家，不可与之。
Dizziness (Xuan Yun) refers to the sensation of lightheadedness and vertigo where one feels as if spinning. If caused by Liver Wind (Liver Wind) combined with Phlegm-Fluids (Tan Yin), it is generally treated with Er Chen Tang (Two-Aged Decoction) modified. If caused by Deficiency (Xu), it is treated with Yi Wei Lu Rong Jiu (Single Antler Deer Wine). If caused by Hyperactive Fire (Huo Kang), it is treated with Yi Wei Da Huang San (Single Rhubarb Powder).
Er Chen Tang (Two-Aged Decoction)
Ban Xia (Pinelliae Rhizoma, 3 qian) Chen Pi (Citri Reticulatae Pericarpium, 3 qian) Fu Ling (Poria, 3 qian) Gan Cao (Glycyrrhizae Radix et Rhizoma, 2 qian, honey-fried) Decoct in water until half a cup remains, take warm. If due to Liver Wind, add Fang Feng (Saposhnikoviae Radix), Yu Zhu (Polygonati Odorati Rhizoma), Tian Ma (Gastrodiae Rhizoma), Gou Teng (Uncariae Ramulus cum Uncis). If due to Phlegm-Fluids, double the dosage of Ban Xia and double Ze Xie (Alismatis Rhizoma). For excessive Fire, add Huang Qin (Scutellariae Radix) and Yuan Shen (Ophiopogonis Radix).
Yi Wei Lu Rong Jiu (Single Antler Deer Wine)
Lu Rong (Cervi Cornu Pantotrichum, 1 liang) Decoct in wine, strain, add a small amount of She Xiang (Moschus), and take.
Yi Wei Da Huang San (Single Rhubarb Powder)
Da Huang (Rhei Radix et Rhizoma, processed) Grind into powder, mix with tea and swallow. Each dose is 1 qian to 2-3 qian. Qing Ning Wan (Qingning Pill) can also be used as a substitute.
Phlegm-Fluids (Tan Yin) are diseases of the Lung and Kidney. Their root lies in Dampness of the Spleen Earth (Tu Shi). The Lung Qi descends to transform into fluids, and Kidney Water ascends to transform into Qi. Once Yang Qi declines and Spleen Earth becomes damp, Lung Qi becomes obstructed and cannot transform fluids; Kidney Water stagnates and cannot transform Qi. When Qi fails to transform fluids, it stagnates and steams upward to form Phlegm (Tan); when Water fails to transform Qi, it accumulates downward to form Fluids (Yin). When Phlegm-Fluids linger and block the clear orifices and airways, this leads to coughing and wheezing, shortness of breath, chest fullness, poor sleep and appetite, and irregular emotions (anger and joy), giving rise to various pathological changes. If Phlegm-Fluids linger causing abdominal distension, treat with Jiang Ling Ban Xia Tang (Ginger, Poria, and Pinellia Decoction) or Xiao Ban Xia Jia Fu Ling Tang (Minor Pinellia Decoction plus Poria). If Phlegm-Fluids stagnate causing wheezing with sound, treat with Xiao Qing Long Tang (Minor Green Dragon Decoction) or Ma Huang She Ye Tang (Ephedra and Belamcanda Decoction). If Fluids accumulate above, Qi fails to transform fluids, leading to Fluids lingering below and transforming into Phlegm, treat with Gui Ling Gan Zhu Tang (Cinnamon Twig, Poria, Licorice, and Atractylodes Macrocephala Decoction). If Fluids accumulate below, Water fails to transform Qi, leading to Fluids flooding the chest and transforming into Phlegm, treat with Zhen Wu Tang (True Warrior Decoction). If Water-Fluids stagnate in the Zang-Fu organs, located above in the chest and diaphragm, suitable for draining the Qi level, treat with Shi Zao Tang (Ten Jujube Decoction). Located below in the umbilical and abdominal region, suitable for draining via the water passages, treat with Zhu Ling Tang (Polyporus Decoction). Flowing into the meridians, suitable for draining through the sweat pores, treat with Wu Ling San (Five-Ingredient Powder with Poria). For all cases of Phlegm-Fluids that can be treated by emesis, treat with Gua Di San (Melon Stalk Powder).
Jiang Ling Ban Xia Tang (Ginger, Poria, and Pinellia Decoction)
Fu Ling (Poria, 3 qian) Ze Xie (Alismatis Rhizoma, 3 qian) Gan Cao (Glycyrrhizae Radix et Rhizoma, 1 qian) Ban Xia (Pinelliae Rhizoma, 3 qian) Xing Ren (Armeniacae Semen Amarum, 3 qian) Sheng Jiang (Zingiberis Rhizoma Recens, 3 qian) Chen Pi (Citri Reticulatae Pericarpium, 3 qian) Decoct in water until half a cup remains, take warm. If there is Heat above, add Huang Qin (Scutellariae Radix) and Bei Mu (Fritillariae Thunbergii Bulbus). If there is Cold below, assist with Gan Jiang (Zingiberis Rhizoma) and Fu Zi (Aconiti Lateralis Radix Praeparata). For stubborn Phlegm that is sticky and difficult to move, add Zhi Shi (Aurantii Fructus Immaturus) to open it.
Xiao Ban Xia Jia Fu Ling Tang (Minor Pinellia Decoction plus Poria) (See formula in Wheezing section) Xiao Qing Long Tang (Minor Green Dragon Decoction) (See formula in "Treatise on Cold Damage") Ma Huang She Ye Tang (Ephedra and Belamcanda Decoction) (See formula in "Essential Prescriptions from the Golden Cabinet")
Gui Ling Gan Zhu Tang (Cinnamon Twig, Poria, Licorice, and Atractylodes Macrocephala Decoction)
Fu Ling (Poria, 4 qian) Bai Zhu (Atractylodis Macrocephalae Rhizoma, 3 qian) Gui Zhi (Cinnamomi Ramulus, 3 qian) Gan Cao (Glycyrrhizae Radix et Rhizoma, 1.5 qian, honey-fried) Decoct in water until half a cup remains, take warm.
Zhen Wu Tang (True Warrior Decoction)
Fu Ling (Poria, 3 qian) Bai Shao (Paeoniae Radix Alba, 3 qian) Sheng Jiang (Zingiberis Rhizoma Recens, 3 qian) Bai Zhu (Atractylodis Macrocephalae Rhizoma, 2 qian) Fu Zi (Aconiti Lateralis Radix Praeparata, 2 qian) Decoct in water until half a cup remains, take warm.
Shi Zao Tang (Ten Jujube Decoction)
Yuan Hua (Genkwa Flos, roasted) Gan Sui (Kansui Radix) Da Ji (Euphorbiae Pekinensis Radix) (Equal parts) Sieve separately, weigh and grind into powder, mix well. Use two cups of water, first decoct ten Jujubes (Ziziphi Jujubae Fructus) until reduced to seventy percent volume, strain off dregs, add the medicine powder. Strong persons take 0.8-0.9 fen, weak persons take 0.5-0.6 fen, take warm at dawn. If bowel movement is scant and disease persists, take again the next day, increase by 0.3 fen. After purgation, nourish oneself with millet porridge.
Zhu Ling Tang (Polyporus Decoction) (See formula in Plague section)
Wu Ling San (Five-Ingredient Powder with Poria)
Zhu Ling (Polyporus, 18 zhu) Ze Xie (Alismatis Rhizoma, 1 liang 6 zhu) Bai Zhu (Atractylodis Macrocephalae Rhizoma, 18 zhu) Gui Zhi (Cinnamomi Ramulus, 0.5 liang) Fu Ling (Poria, 18 zhu) Grind together into powder, mix with plain boiled water (Bai Yin) and take 3 qian per dose, three times daily. Drink plenty of warm water; recovery occurs with sweating. (Note: Bai Yin refers to plain boiled water).
Gua Di San (Melon Stalk Powder)
Gua Di (Momordicae Fructus) Chi Xiao Dou (Vigna Semen Rubrum) Grind equal parts into powder. Take 2 qian, mix with a pinch of fermented soybeans (Xiang Chi) boiled in hot water into a thin paste, and take with the powder. If vomiting does not occur, increase the dose slightly until rapid vomiting occurs, then stop. Do not administer to patients who have suffered blood loss.