凡伤寒头眩者莫不因汗吐下虚其上焦元气之所致也眩者目无常主头眩者俗谓头旋眼花是也眩冒者昏冒是也少阳口
苦咽干目眩者少阳居表里之间以表邪渐入于里表中阳虚故目眩也太阳少阳并病或眩者责其虚也伤寒有起则头眩与眩冒
者皆汗吐下后所致是知其阳虚也故针经曰上虚则眩下虚则厥眩虽为虚又阳明中风但头眩不恶寒者此又风主眩也凡此皆
非逆候及其诸逆发汗剧者言乱目眩者死噫病势已成可得半愈及病已剧神医莫为也
太阳 伤寒若吐若下后心下逆满气上冲胸起则头眩脉沉紧发汗则动经身为振振摇者茯苓桂枝白术甘草汤主之(吐下
后里虚气上逆心下逆满气上冲胸表虚阳不足起则头眩脉浮紧邪在表当发汗脉沉紧邪在里不可汗汗则外动经络损伤阳气
则不能主持诸脉身为振振摇也与此汤以和经益阳 真武汤主之汗后补不止用以密腠理未能止汗)伤寒吐下后发汗虚烦脉
甚微八九日心下痞硬胁下痛气上冲咽喉眩冒经脉动惕者久而成痿(伤寒吐下后发汗则表里之气俱虚虚烦脉甚微为正气内
虚邪气独在至七八日正气当复邪气当罢尚心下痞胁下满气上冲咽喉眩冒者是正气未复而邪留也经脉动惕者经络之气虚
极久则热气还经必成痿弱或用真武汤桂枝茯苓白术甘草汤)
太阳少阳并病心下硬颈项强而眩者当刺大椎肺俞禁下 太阳少阳并病头项强痛眩冒时如结胸心下痞硬刺大椎第一
间肺俞肝俞禁发汗汗则谵语脉弦五六日谵语不止刺期门
阳明 病脉迟食难用饱饱则微烦头眩必小便难欲作谷疸须下之腹满如故所以然者脉迟故也(见前阳明病)阳明病但
头眩不恶寒故能食而咳其人必咽痛若不咳者咽不痛(阳明病身不重但头眩而不恶寒者阳明中风而风内攻也经曰阳明病若
能食名中风风邪攻胃胃气上逆则咳咽门者胃之系咳甚则咽伤故咽痛若胃气不逆则不咳其咽亦不痛也 四逆散加桔梗小
柴胡乃本经中风非伤寒小承气汤)
少阳 少阳之病口苦咽干目眩也(小柴胡汤加天麻川芎)
少阴 病下利止而头眩时时自冒者死(下利则水谷竭眩冒则阳气脱故死)
动气在左误汗则头眩汗不止筋惕肉 (方论见动气活人云宜小建中汤)诸逆误汗而言乱目眩者死(论见谵语)
吴 太阳中风头眩头摇者脉浮弦而急也羌活神术汤加防风天麻之类若血虚头眩者以四物汤加人参天麻之类若痰
火
上攻者加酒芩竹沥之类若内伤劳役阴虚头眩者宜补中益气汤加川芎天麻防风蔓荆子之类若下焦元气虚脱者宜人参养荣
汤或大建中汤加天麻曾治一妇人服藿香正气三剂汗出过多头眩身摇发热脉虚数遂用人参养荣汤倍加人参为主加天麻少
佐酒炒黄柏二服而愈易老曰头旋目黑非天麻不能除故加之少加黄柏以救肾水也
凡是伤寒病出现头眩症状的,没有不是因为发汗、催吐或泻下导致上焦元气亏虚所引起的。“眩”是指眼睛失去常态,“头眩”是俗称的头旋眼花;“眩冒”则是昏沉迷糊。少阳病出现的口苦、咽干、目眩,是因为少阳经位于表里之间,表邪逐渐向里传变,导致表里的阳气虚弱,所以出现目眩。太阳病与少阳病同时发病(并病)而出现眩晕的,责任在于正气亏虚。伤寒病中,起身时感到头晕或昏冒的,都是经过发汗、催吐、泻下之后才出现的,由此可知这是阳气亏虚所致。所以《针经》说:上部虚弱则眩晕,下部虚弱则厥逆。虽然眩晕多属虚证,但阳明中风如果仅见头眩而不恶寒的,这是因为风邪主令眩晕的缘故。以上这些情况都不是危重死候。等到各种误治后强行发汗,导致言语错乱、目眩的,就会死亡。唉!病势已经形成,尚可争取半愈;如果病情已经极度严重,即使是神医也无能为力了。
太阳伤寒,如果使用催吐或泻下法治疗后,出现心下逆满(胃脘部胀满且有气上逆感),气向上冲至胸部,起身时头晕,脉象沉紧;若再误用发汗法,则会扰动经络,导致身体震颤摇晃。此时应用茯苓桂枝白术甘草汤主治。(注:吐下之后里气虚弱,气机上逆导致心下逆满、气冲胸;表虚阳气不足,起身则头晕。脉浮紧说明邪在表,应当发汗;脉沉紧说明邪在里,不可发汗。若误汗,会外动经络,损伤阳气,导致阳气不能统摄诸脉,身体震颤摇晃。给予此汤以调和经络、补益阳气。)若真武汤主治。(注:发汗后不止汗,用以固密腠理,未能止汗。)
伤寒经过催吐、泻下后再发汗,导致虚烦,脉象非常微弱;过了八九天,出现心下痞硬、胁下疼痛、气上冲咽喉、头晕昏冒、经脉跳动惕惧的症状,时间久了会发展成痿证。(注:伤寒吐下后再发汗,会导致表里之气都虚弱。虚烦、脉微是正气内虚,邪气独存。到了七八天,正气应当恢复,邪气应当罢除,但现在仍有心下痞、胁下满、气冲咽喉、头晕等症,说明正气未复而邪气滞留。经脉跳动惕惧,说明经络之气极度虚弱,久而久之热气返还经络,必然形成痿弱。可用真武汤或茯苓桂枝白术甘草汤。)
太阳病与少阳病并病,出现心下硬、颈项强直且眩晕的,应当针刺大椎穴和肺俞穴,禁止使用泻下法。
太阳病与少阳病并病,出现头项强痛、眩晕昏冒,有时像结胸证那样心下痞硬的,针刺大椎第一间、肺俞穴、肝俞穴,禁止发汗。若误发汗,会出现谵语,脉弦;五六天后谵语不止,应针刺期门穴。
阳明病,脉迟,进食难以吃饱,饱食后轻微心烦、头眩,必定小便困难,想要发生谷疸,必须用下法。但如果腹部依然胀满,之所以这样,是因为脉迟的缘故。(参见前文阳明病篇)。阳明病如果仅见头眩而不恶寒,能够进食并且咳嗽,其人必定咽痛;如果不咳嗽,咽部就不痛。(注:阳明病身体不沉重,仅头眩且不恶寒,这是阳明中风,风邪内攻。经文说:阳明病若能食,名为中风。风邪攻胃,胃气上逆则咳嗽。咽门是胃的系联,咳嗽剧烈则伤咽,所以咽痛。若胃气不逆,则不咳嗽,咽也不痛。可用四逆散加桔梗,或小柴胡汤。这是本经的中风,而非伤寒。小承气汤也可用。)
少阳病,表现为口苦、咽干、目眩。(可用小柴胡汤加天麻、川芎。)
少阴病,下利停止但头眩,时常自我感觉昏冒的,预后不良,主死。(注:下利则水谷精微竭绝,眩晕昏冒则阳气脱失,所以主死。)
动气在左侧,误用发汗法,则出现头眩、汗出不止、筋惕肉瞤。(方论见动气篇,《活人书》云宜用小建中汤。)各种误治后误用发汗,导致言语错乱、目眩的,主死。(论述见谵语篇。)
吴氏(指吴崑或相关医家观点):太阳中风,头眩、头摇的,脉象浮弦而急。可用羌活神术汤加防风、天麻之类。若是血虚导致的头眩,用四物汤加人参、天麻之类。若是痰火上攻,加酒炒黄芩、竹沥之类。若是内伤劳役、阴虚导致的头眩,宜用补中益气汤加川芎、天麻、防风、蔓荆子之类。若是下焦元气虚脱,宜用人参养荣汤或大建中汤加天麻。曾治疗一位妇人,服用藿香正气散三剂,出汗过多,导致头眩、身摇、发热、脉虚数。于是用人参养荣汤,倍加人参为主药,加天麻,少佐酒炒黄柏,服两剂而痊愈。易老(李东垣)说:头旋目黑,非天麻不能去除,所以加入天麻;少加黄柏以救肾水。
In cases of Shanghan (Cold Damage) presenting with dizziness, it is invariably caused by the deficiency of Yuan Qi (Primordial Qi) in the Upper Jiao (Upper Burner) resulting from improper sweating, vomiting, or purging. "Xuan" (Dizziness) refers to the eyes losing their normal focus; "Tou Xuan" (Head Dizziness) is commonly known as vertigo and blurred vision; "Xuan Mao" refers to a state of faintness and confusion. In Shaoyang disease, symptoms such as bitter taste in the mouth, dry throat, and visual dizziness occur because the Shaoyang channel resides between the exterior and interior. As pathogenic factors gradually move from the exterior to the interior, the Yang Qi of both the exterior and interior becomes deficient, leading to visual dizziness. When Taiyang and Shaoyang diseases occur simultaneously (Bing Bing) and present with dizziness, the root cause is deficiency. In Shanghan, dizziness upon rising or general faintness are all consequences of prior sweating, vomiting, or purging, indicating Yang Qi deficiency. Thus, the *Zhen Jing* (Classic of Acupuncture) states: "Deficiency in the upper part causes dizziness; deficiency in the lower part causes Jue (cold extremities/reversal)." Although dizziness is generally a sign of deficiency, in Yangming Wind Strike, if there is only head dizziness without aversion to cold, this is because Wind pathogens primarily cause dizziness. None of these conditions represent a critical or terminal prognosis. However, if various mis-treatments lead to forced sweating, resulting in disordered speech and dizziness, death ensues. Alas! If the disease process has already established itself, half recovery may still be sought; but if the condition is already extreme, even a divine physician cannot help.
In Taiyang Shanghan, if vomiting or purging is used first, followed by symptoms of fullness and rebellious Qi in the epigastrium (Xin Xia Ni Man), Qi rushing upward to the chest, dizziness upon rising, and a deep, tight pulse; if sweating is then incorrectly induced, it will disturb the collaterals, causing the body to tremble and shake. The formula Fu Ling Gui Zhi Bai Zhu Gan Cao Tang (Poria, Cinnamon Twig, Atractylodes Macrocephala, and Licorice Decoction) should be administered. (Note: After vomiting and purging, the interior is deficient, causing Qi rebellion and fullness in the epigastrium with upward rush to the chest; exterior deficiency and insufficient Yang Qi cause dizziness upon rising. A floating, tight pulse indicates pathogen in the exterior, warranting sweating; a deep, tight pulse indicates pathogen in the interior, forbidding sweating. Incorrect sweating moves the exterior collaterals, damages Yang Qi, preventing it from governing the vessels, leading to bodily trembling. This decoction harmonizes the collaterals and benefits Yang.) If sweating fails to stop after induction, Zhen Wu Tang (True Warrior Decoction) may be used to secure the interstices (Cou Li).
After Shanghan is treated with vomiting, purging, and then sweating, leading to empty irritability and a very faint pulse; after eight or nine days, if one experiences hardness and fullness in the epigastrium, pain under the ribs, Qi rushing to the throat, dizziness and faintness, and twitching of the meridians, prolonged duration will result in Wei syndrome (flaccidity/atrophy). (Note: Vomiting, purging, and subsequent sweating deplete both exterior and interior Qi. Empty irritability and faint pulse indicate internal deficiency of righteous Qi with sole presence of pathogenic Qi. By the seventh or eighth day, righteous Qi should recover and pathogenic Qi should dissipate. Persistent epigastric fullness, rib distension, Qi rushing to the throat, and dizziness indicate that righteous Qi has not recovered while pathogenic Qi remains. Twitching of meridians indicates extreme deficiency of Qi in the channels; over time, heat returns to the channels, inevitably forming flaccidity. Zhen Wu Tang or Fu Ling Gui Zhi Bai Zhu Gan Cao Tang may be used.)
When Taiyang and Shaoyang diseases occur simultaneously, presenting with hardness in the epigastrium, stiffness in the neck and occiput, and dizziness, acupuncture at Da Zhui (GV14) and Fei Shu (BL13) is indicated, and purgation is contraindicated.
When Taiyang and Shaoyang diseases occur simultaneously, presenting with stiffness and pain in the head and neck, dizziness and faintness, and sometimes epigastric fullness resembling Jie Xiong (Chest Binding), acupuncture at the first interspace of Da Zhui (GV14), Fei Shu (BL13), and Gan Shu (BL18) is indicated, and sweating is contraindicated. If sweating is incorrectly induced, delirium occurs with a wiry pulse; if delirium persists for five to six days, acupuncture at Qi Men (LR14) is required.
In Yangming disease, a slow pulse, inability to eat large meals (fullness leads to slight irritability and head dizziness), difficulty in urination, and impending Gu Dan (Grass Jaundice) indicate the need for purgation. However, if abdominal fullness persists, it is due to the slow pulse. (See previous Yangming disease section.) In Yangming disease, if there is only head dizziness without aversion to cold, the patient can eat and cough, and must have a sore throat; if there is no cough, the throat is not painful. (Note: Yangming disease without heavy body sensation, only head dizziness and no aversion to cold, indicates Yangming Wind Strike with internal attack by Wind. The classic states: "Yangming disease where the patient can eat is named Wind Strike." Wind pathogen attacks the Stomach, causing Stomach Qi to rebel upward, leading to cough. The throat is the connection of the Stomach; severe cough injures the throat, causing pain. If Stomach Qi does not rebel, there is no cough and no throat pain. Si Ni San (Frigid Extremities Powder) with Jie Geng (Platycodon Root) or Xiao Chai Hu Tang (Minor Bupleurum Decoction) may be used. This is Wind Strike of this channel, not Shanghan. Xiao Cheng Qi Tang may also be used.)
Shaoyang disease presents with bitter taste in the mouth, dry throat, and visual dizziness. (Xiao Chai Hu Tang with Tian Ma and Chuan Xiong may be added.)
In Shaoyin disease, if diarrhea stops but dizziness occurs, accompanied by frequent episodes of self-induced faintness, the prognosis is fatal. (Note: Diarrhea exhausts water and grain essence; dizziness and faintness indicate depletion of Yang Qi, hence fatal.)
If Dong Qi (Pulsating Qi) is located on the left and sweating is incorrectly induced, dizziness and continuous sweating with muscle twitching occur. (For formula discussion, see Dong Qi section; *Huo Ren Shu* suggests Xiao Jian Zhong Tang.) For various mis-treatments where incorrect sweating leads to disordered speech and dizziness, death ensues. (Discussion seen in Delirium section.)
Wu's perspective: In Taiyang Wind Strike, dizziness and head shaking present with a floating, wiry, and rapid pulse. Qiang Huo Shen Shu Tang (Notopterygium and Atractylopsis Decoction) with Fang Feng and Tian Ma may be used. For blood deficiency causing dizziness, Si Wu Tang (Four Substances Decoction) with Ren Shen and Tian Ma may be used. For Phlegm-Fire attacking upward, Jiu Huang Qin (Wine-fried Scutellaria Root) and Zhu Li (Bamboo Sap) may be added. For internal injury from labor and fatigue causing Yin deficiency and dizziness, Bu Zhong Yi Qi Tang (Tonify the Middle and Augment the Qi Decoction) with Chuan Xiong, Tian Ma, Fang Feng, and Man Jing Zi may be used. For deficiency and collapse of Yuan Qi in the Lower Jiao, Ren Shen Yang Rong Tang (Ginseng Nourishing the Blood Decoction) or Da Jian Zhong Tang (Great Construct the Middle Decoction) with Tian Ma may be used. Once, a woman was treated with three doses of Huo Xiang Zheng Qi San (Patchouli Regulating the Qi Decoction), resulting in excessive sweating, dizziness, body shaking, fever, and a deficient, rapid pulse. Therefore, Ren Shen Yang Rong Tang was used with doubled Ren Shen as the main herb, plus Tian Ma, and a small amount of wine-fried Huang Bo (Phellodendron Bark); she recovered after two doses. Yi Lao (Li Dongyuan) stated: "Vertigo and blackening of the eyes cannot be cured without Tian Ma," so Tian Ma is added; a small amount of Huang Bo is added to nourish Kidney Water.