医有不知其病而不能治者；亦有明知其病而不能治者，有莫解其病而莫能疗者，亦有了解其病而仍莫能
疗者。与哮
痫相颉颃而深藏之固，更甚于哮痫者，正头风一症。或数日一发，或数月一发，其发也，突如其来，不因邪触
；其止也， 然而止，非藉药医。揣其痛之根，不越风毒之客于髓海焉。六经皆有头痛，三阳之经上于头，随
其经而医之，药到而痛自除。痛居经络不到之处，羌活、防风，无所施其勇；升麻、干葛，无所竭其力；柴胡
、黄芩不能消其事而逐其邪。三阴亦令人头痛，或痰壅于胸膈（太阴）；或气逆于脑顶（少阴）；或冷逼乎督
脉（厥阴）。而痛不关于痰气与风，南星、半夏，燥其痰；麻黄、附片，温其经；吴萸、干姜去其寒。燥者自
燥，温者自温，去者自去，而痛者自痛也。本草胪陈，空对神农而数典；万书案积，莫向仲景而问建。抑又闻
之剑阁之危险，四面拒敌，而偏以缒入之（邓艾破蜀至阴平，山势险绝，军士不得过，以缒入之）；逼阳之深，
固万夫莫当，而偏以老克之（《左传》逼阳城小而固，晋荀偃、HT 伐逼阳，入于逼阳请于荀 曰∶“水潦
将降，惧不能归，请班师。”荀 曰∶“牵帅老夫，以至于此，七日不克，必尔乎，取之五月庚寅。”荀偃、
HT帅卒攻逼阳，亲受矢石，甲午灭之）。阅方书鼻渊，称为脑漏，脑可漏之出，亦可注之入，以口服药而经不
通者，以鼻注药而窍自通。在拣其解毒去风性味之平正者，淡淡注之（白菊、陈茶煎汤冷注。一方，皂角、细
辛，研细末，吹鼻得嚏则解），而痛自渐渐减炙。以鼻代口，休防郢人之垩（《庄子》郢人鼻端有垩，使匠石
斫之，匠石运斤成风，垩去
而鼻不伤，郢人立不改容）；追风拔毒，何假华佗之刀（华佗字符化，汉末沛国谯人。通五经，精方脉，能刳
骨疗疾，为外科之祖。有《青囊》书，惜乎无存）。然此法肇自前人莱菔汁注鼻之方，特取而变化之者。至于
偏头风痛，丹溪以为左属风、属火，多血虚；右属热、属痰，多气虚，用之未必大验。究其根，亦是风毒傍于
脑海之旁，病之去路，多从目出而解。同邑石光南所传淡婆婆一方（淡婆婆根为君，天麻、京子为臣，川芎、
白芷为佐，菊花、当归、木贼为使，黑豆百粒为引），初起者用之屡效，殊不可解，录之以备急用。一种手三
阳之脉受风寒，伏留而不去者，名厥头痛；入连在脑者，名真头痛。其受邪与正头风无异，而其来也速，其死
也速，更有甚于偏正头风者，古无救方，质诸海内名公，不知家亦藏有秘方否？
石光南家累千金，广为结纳，高人异士，过其地者，辄馆于书斋，所得多医书未传之秘方。淡婆婆，又名
淡亲家母，未考其性，但尝其味，亦属平淡，草药肆购之。
医学中有不知道病情因而无法治疗的；也有明明知道病情却无法治疗的；有对病情毫无理解因而不能治愈的；也有虽然理解了病情但仍然无法治愈的。有一种病与哮喘、癫痫相抗衡且深藏体内，比哮喘和癫痫更严重的，就是正头风这一病症。它有时几天发作一次，有时几个月发作一次，发作时突然而来，并非因为外邪触动；停止时也突然而止，不需要借助药物医治。推测其疼痛的根源，不外乎是风毒客居于髓海（脑）。六经都有头痛的情况，三阳经上行至头部，顺着经络进行医治，药到痛自除。如果疼痛位于经络所不到的地方，羌活、防风就无法施展其功效；升麻、干葛也无法竭尽它的力量；柴胡、黄芩也不能消除病势并驱逐邪气。
三阴经也令人头痛，有的是痰壅塞在胸膈（太阴）；有的是气逆冲于头顶（少阴）；有的是寒气逼迫督脉（厥阴）。然而这种疼痛与痰、气和风无关，使用南星、半夏燥湿化痰；使用麻黄、附片温通经脉；使用吴茱萸、干姜去除寒邪。燥湿的依然燥湿，温通的依然温通，祛寒的依然祛寒，而疼痛者依然疼痛。本草书中罗列陈列，空对着神农氏列举典故；案头堆积万卷书籍，却没法向张仲景请教建方。
我又听说剑阁地势危险，四面拒敌，却偏偏用绳索吊入的方式进攻（邓艾攻破蜀国到达阴平，山势险绝，军队无法通过，便用绳索将士兵吊下去）；逼阳城深邃坚固，万人难以抵挡，却偏偏用老练的策略攻克它（《左传》记载逼阳城小而坚固，晋国荀偃等人讨伐逼阳，进入逼阳后请求撤退说：“雨水将至，担心无法返回，请班师回朝。”荀偃说：“率领老夫来到此地，七天攻不下，必定在此取之，五月庚寅日。”荀偃等人率领士兵攻打逼阳，亲自承受箭石，甲午日灭掉了逼阳）。阅读方书关于鼻渊的记载，称为脑漏，脑液可以漏出，也可以注入，口服药物如果经络不通，可以通过鼻腔注药使孔窍自然通畅。选择那些解毒去风、性味平和的药物，淡淡地注入（白菊、陈茶煎汤冷却后注入。另一方法，皂角、细辛研成细末，吹入鼻孔打喷嚏即可缓解），疼痛自然会渐渐减轻。以鼻子代替嘴巴，不用担心像郢人鼻尖上的白泥那样被削伤鼻子（《庄子》中郢人鼻尖上有白泥，让匠石砍掉，匠石挥动斧头风声呼呼，白泥去掉而鼻子不受伤，郢人站立神色不变）；追风拔毒，何必借用华佗的手术刀（华佗字元化，汉末沛国谯人。精通五经，精于方脉，能剖开骨头治疗疾病，被视为外科始祖。著有《青囊》书，可惜没有流传下来）。
然而这种方法起源于前人莱菔汁注鼻的方子，只是特意选取并加以变化运用罢了。至于偏头风痛，朱丹溪认为左侧属于风、属于火，多因血虚；右侧属于热、属于痰，多因气虚，使用这些方法未必有很大疗效。究其根本，也是风毒旁居于脑海之侧，病邪的去路，多从眼睛排出而解除。同乡石光南所传授的淡婆婆一方（淡婆婆根为君药，天麻、京子为臣药，川芎、白芷为佐药，菊花、当归、木贼为使药，黑豆百粒为引药），初起时使用此方屡见成效，实在不可理解，记录下来以备急用。还有一种手三阳经脉受风寒侵袭，潜伏停留而不离去的情况，名叫厥头痛；疼痛牵连到脑部的，名叫真头痛。它们受到的邪气与正头风没有不同，但发病迅速，死亡也迅速，更有甚于偏头风和正头风的，古代没有救治的方子，请问海内各位名医，不知家中是否藏有秘方？
石光南家累千金，广泛结交，高人异士经过他的地方，往往被安置在书斋中，因此他得到了许多医书中未流传的秘方。淡婆婆，又名淡亲家母，未能考证其药性，只品尝过它的味道，也属于平淡之品，草药店可以买到。
There are cases in medicine where the disease is unknown and thus cannot be treated; there are also cases where the disease is clearly known but still cannot be treated. There are those who do not understand the disease and therefore cannot cure it, and there are those who understand the disease yet still fail to cure it. A condition that rivals asthma (Xiao) and epilepsy (Xian) in severity and lies deeply concealed, even surpassing them, is Zheng Tou Feng (True Head Wind). It may occur every few days or every few months. Its onset is sudden, not triggered by external pathogens; its cessation is equally abrupt, requiring no medicinal intervention. Speculating on the root of the pain, it does not exceed the invasion of wind-toxin into Sui Hai (Sea of Marrow, i.e., the brain).
Headache can occur in all six meridians. The three Yang meridians ascend to the head; treating according to the specific meridian allows the medicine to reach the target and the pain to subside spontaneously. However, if the pain resides in areas beyond the reach of the meridians, Qiang Huo (Notopterygii Rhizoma et Radix) and Fang Feng (Saposhnikoviae Radix) cannot exert their prowess; Sheng Ma (Cimicifugae Rhizoma) and Gan Ge (Puerariae Radix) cannot exhaust their strength; Chai Hu (Bupleuri Radix) and Huang Qin (Scutellariae Radix) cannot eliminate the pathology nor expel the pathogen.
The three Yin meridians also cause headaches. Some involve phlegm obstructing the chest and diaphragm (Tai Yin); some involve qi rebellion rushing to the crown of the head (Shao Yin); some involve cold pressing against the Du Mai (Governing Vessel) (Jue Yin). Yet, this pain is unrelated to phlegm, qi, or wind. Using Nan Xing (Arisaematis Rhizoma Preparatum) and Ban Xia (Pinelliae Rhizoma) to dry dampness; using Ma Huang (Ephedrae Herba) and Fu Pian (Aconiti Lateralis Radix Preparata) to warm the meridians; using Wu Zhu Yu (Evodiae Fructus) and Gan Jiang (Zingiberis Rhizoma) to remove cold—these actions remain independent: drying remains drying, warming remains warming, removing cold remains removing cold, while the pain persists unchanged. The Materia Medica lists countless entries, vainly reciting classics before Shennong; libraries accumulate volumes of books, yet one cannot ask Zhang Zhongjing for prescription construction.
Furthermore, I have heard of the perilous terrain of Jiange, which repels enemies from all sides, yet Deng Ai breached it by lowering soldiers down ropes (Deng Ai defeated Shu at Yinpang, where the mountain terrain was extremely steep and impassable for armies, so he lowered his troops down using ropes); Biyang City was deep and fortified, impervious to ten thousand men, yet it was conquered by veteran tactics (In *Zuo Zhuan*, Biyang City was small but well-fortified. Xun Yan of Jin attacked Biyang. Upon entering, his generals requested a retreat due to impending rains and fear of being cut off. Xun Yan declared, "I have led you here; if we do not take it in seven days, I will take your heads." He personally endured arrows and stones, and Biyang fell on the day Jia Wu). Reading medical formularies regarding Bi Yuan (Nasal Sinusitis), termed Nao Lou (Brain Leakage): brain fluid can leak out, but it can also be injected in. If oral medication fails due to blocked meridians, nasal instillation can naturally open the orifices. Select herbs with neutral properties for detoxification and wind-expulsion, and gently instill them (Decool decoction of Bai Ju [Chrysanthemi Flos] and Chen Cha [Aged Tea]; another method uses Zao Jiao [Gleditsiae Fructus] and Xi Xin (Asari Radix) ground into powder, insufflated into the nose to induce sneezing, thereby relieving pain). The pain will gradually diminish. Using the nose instead of the mouth, one need not fear injury like the man from Ying whose nose tip was scraped clean by Zhuang Shi without harming the nose (*Zhuangzi*); for chasing away wind and extracting toxins, what need is there for Hua Tuo's surgical knife? (Hua Tuo, courtesy name Yuanhua, was from Qiao, Pei State, late Han Dynasty. He mastered the Five Classics, excelled in pulse diagnosis and prescriptions, could perform surgeries such as opening bones to treat diseases, and is regarded as the ancestor of surgery. He authored *Qing Nang Jing*, unfortunately lost).
However, this method originated from an earlier formula involving radish juice instilled into the nose, merely adapted and modified. As for Pian Tou Feng (Lateral Head Wind), Zhu Danxi believed the left side belongs to wind and fire, often associated with blood deficiency; the right side belongs to heat and phlegm, often associated with qi deficiency. Applying these generalizations may not yield significant results. Investigating the root, it is also wind-toxin lodging beside the Sea of Marrow. The exit path for the pathogen often resolves through the eyes. A formula passed down by my fellow townsman Shi Guangnan, named Dan Po Po (Dan Po Po Gen [Radix of Unknown Plant] as Sovereign herb, Tian Ma [Gastrodiae Rhizoma] and Jing Zi [likely Ginkgo Semen or similar] as Minister herbs, Chuan Xiong [Ligustici Chuanxiong Rhizoma], Bai Zhi [Angelicae Dahuricae Radix] as Assistant herbs, Ju Hua [Chrysanthemi Flos], Dang Gui [Angelicae Sinensis Radix], Mu Zei [Equiseti Herba] as Envoy herbs, and 100 Black Beans [Sojae Glycines Semen Nigrum] as Guide herbs), proves highly effective for early-stage cases. This is inexplicable, so I record it for emergency use.
Another type involves the Hand Three Yang meridians invaded by wind-cold, which lingers and does not depart, named Jue Tou Tong (Jue Headache); if the pain extends into the brain, it is named Zhen Tou Tong (True Headache). The pathogenic invasion is no different from Zheng Tou Feng, but its onset is rapid, and its fatality is swift, exceeding both lateral and true head winds. Ancient texts lack rescue formulas. I inquire among renowned physicians within and outside the seas: do you possess secret formulas?
Shi Guangnan accumulated immense wealth and widely networked. Masters and unusual scholars passing through were hosted in his study, allowing him to acquire many secret formulas not recorded in standard medical books. Dan Po Po, also known as Dan Qin Jia Mu, has unverified properties, but tasting it reveals a bland flavor. It is commonly available in herbal shops.