有因内病将愈，随转外症者。亦有先由外症欲痊，旋起内病者。更有轻病变重，而重时
又转轻，迭相循环者。又见病日未久，传变不定，而病象无常者。皆由脏腑早败，精血散离，
不能敛束，而神气无所根据，现出幻端，其亡可立而待也。
砒霜本大热大毒，禁用之品，一入药中进腹则肠胃炸裂，立时见毙。若以搽头虱，则头
面赤肿裂痛。用擦疥癞，则浑身肉肿皮绽，或腐肌剥肤，轻则使人生理残障，重则殒命。中其毒
者，内多服清败药，外以生军、绿豆粉、青黛、黄连为末，老桐油和敷。
人有素性好静，少怒忽变为多怒而常动，此阴已亏，而阳将亢。有性嗜动善怒，忽转成
寡怒而求静，此阳不足而阴有余。凡七情之喜惧爱憎，迨乎居室衣服饮食玩好，皆与平昔迥
乎相反者，殆非祸兆，即是病机。他人只可迎其意，而婉然劝解。勿可再拂其性，而使更剧
也。
脑户久为湿热上蒸，外被风寒裹束，鼻通于脑，气亦壅塞，时有腥脓渗下，如釜底
常有薪炊，则釜中自生变味，气水涓涓而滴，名曰鼻渊。乃肺脑实火，以清肺饮（方见后），引
加猪胆汁（一个）冲服。胆可通脑，以有情入无情，转能制病。十数服自效。
有的疾病是体内原有的病症即将痊愈时，随即转化为外部症状的。也有的是先由外部症状想要痊愈，随即又引发内部疾病的。更有轻微病变为重症，而在重症阶段又转为轻症，这种轻重交替、循环往复的情况。还见到病程时间不长，但传变规律不确定，且病状表现无常的。这些都是由于脏腑功能早已衰败，精血耗散分离，不能收敛固摄，导致神气失去了依附的基础，从而呈现出各种虚幻异常的征象，其死亡是立刻就可以预见的。
砒霜本性是大热大毒之物，属于禁用的药品，一旦进入药中服下腹部，就会造成肠胃炸裂，立即致死。如果用它来涂抹治疗头虱，会导致头面部红肿破裂疼痛。用来擦拭疥疮癞疾，则会使全身肌肉肿胀皮肤绽开，或者腐蚀肌肉剥落皮肤，轻则使人留下生理残疾，重则导致死亡。中毒的人，内服多种清热解毒败火的药物，外用生大黄、绿豆粉、青黛、黄连研成粉末，用老桐油调和后敷贴。
有的人平素性格喜欢安静，很少发怒，忽然变为多怒且经常躁动，这是阴液已经亏损，而阳气将要亢盛的表现。有的人天性喜好活动且容易发怒，忽然转变为少怒且追求安静，这是阳气不足而阴气有余的表现。凡是七情中的喜、惧、爱、憎等情绪，以及居家生活、衣着饮食、兴趣爱好等方面，都与平时截然相反的，这如果不是灾祸的征兆，就是疾病发生的机理。旁人只能顺从他的心意，委婉地劝解疏导。不可再违背他的性情，从而使病情更加严重。
脑户部位长期受到湿热上蒸，外部又被风寒包裹束缚，鼻子与脑相通，气机也发生壅塞阻滞，时常有腥臭脓液向下渗出，就像锅底常有柴火燃烧，锅自然会产生变味的气味，水汽涓涓滴落，这种情况称为鼻渊（鼻窦炎）。这是肺和脑的实火所致，使用清肺饮（方剂见后文），加入猪胆汁（一个）冲服。胆经可以通达脑部，以有情之品入无情之窍，反而能制约疾病。服用十几次后自见疗效。
患有下疳（生殖器溃疡）和鼓胀病（腹水膨胀）的人，都忌讳食用盐和酱，因为咸味会收敛湿气、助长火势、凝结痰浊，使得外部症状出现肿痛腐烂。然而只吃清淡的食物，人容易变得衰弱无力。用秋石代替盐来调味食用最为妥当。
There are cases where internal diseases are about to heal, followed by the emergence of external symptoms. There are also cases where external symptoms are about to resolve, but subsequently trigger internal diseases. Furthermore, there are instances where mild conditions become severe, and during the severe stage, they revert to being mild, creating a cyclical alternation. We also observe cases where the disease has not been present for long, yet its transmission is unpredictable and its manifestations are irregular. All these arise from the early deterioration of the Zang-Fu organs, the dispersion and separation of Essence and Blood, which fail to consolidate and restrain, causing Shen (Spirit) to lose its foundation. Consequently, illusory and abnormal signs appear, and death can be expected immediately.
Realgar (Pishuang), originally possessing extreme heat and toxicity, is a prohibited substance. Once ingested in medicine, it causes the intestines and stomach to rupture, leading to immediate death. If applied to treat head lice, it causes redness, swelling, cracking, and pain on the head and face. If used to scrub scabies and leprosy, it causes whole-body muscle swelling and skin splitting, or flesh erosion and skin peeling; mildly, it causes physical disabilities, and severely, it causes death. For those poisoned, internally administer various clearing and detoxifying medicines; externally, apply a powder made of Rhubarb (Sheng Jun), Mung Bean Powder (Lü Dou Fen), Indigo Naturalis (Qing Dai), and Coptis Rhizome (Huang Lian), mixed with old Tung Oil for application.
Some individuals who are naturally quiet and rarely angry suddenly become irritable and constantly active; this indicates Yin deficiency and impending Yang hyperactivity. Some individuals who are naturally active and prone to anger suddenly become less irritable and seek quietness; this indicates Yang insufficiency and Yin excess. Any emotions within the Seven Emotions (Joy, Fear, Love, Hate, etc.), as well as preferences in living arrangements, clothing, diet, and hobbies, that are completely opposite to one's usual state, are either omens of disaster or indicators of pathological mechanisms. Others should only accommodate their wishes and gently persuade them. One must not go against their nature, thereby exacerbating the condition.
The Brain Gate (Naohu) area has long been steamed by Damp-Heat rising upwards, while externally wrapped and constrained by Wind-Cold. The nose connects to the brain, so Qi becomes congested and obstructed. Foul-smelling pus oozes down intermittently. Just as fire burning under a pot causes the contents to change flavor, water vapor drips continuously; this condition is called Bi Yuan (Nasal Sinusitis). It is caused by Excess Fire in the Lung and Brain. Use Qing Fei Yin (Clear the Lung Decoction - see formula later), adding Pig Bile (one gallbladder) to take orally. the Gallbladder channel can connect to the brain; using a "sentient" substance to enter an "insentient" orifice can effectively control the disease. Self-efficacy is observed after taking it ten-plus times.
Patients suffering from Chancre (Xia Gan) and Drum Distension (Gu Zhang) must avoid salt and soy sauce, because the salty flavor consolidates Dampness, aids Fire, and condenses Phlegm, causing external symptoms such as swelling, pain, and rotting. However, eating bland food alone may cause the person to easily become weak and frail. Using Autumn Stone (Qiushi) as a substitute for salt in cooking is the most appropriate method.