青州王之一子，年十余岁，目赤多泪，众工无效。戴人见之曰∶此儿病目
得之母腹中被惊。其父曰∶妊娠时，在临清被围。戴人令服瓜蒂散加郁金，上涌而下泄，各
去涎沫数升。人皆笑之。其母亦曰∶儿腹中无病，何吐泻如此？至明日，其目耀然爽明。李
仲安见而惊曰∶奇哉此法！戴人其日又与头上出血及眉上、鼻中皆出血。吐时，次用通经
散二钱，舟车丸七十粒，自吐却少半。又以通经散一钱投之。明日，又以舟车丸三十粒投之
。下十八行，病更不作矣。
河门刘光济之子，才二岁，病 后呕吐发昏，用丁香、豆蔻之类不效。适麻先生寄
其家，乃谓光济曰∶余有小方无毒，人皆知之，公肯从乎？光济曰∶先生之言，必中于理，
何敢不从。麻先生曰∶刘河间常言∶凉膈散可治疮 。张戴人用之如神。况《内经》言∶少阳所至
为呕涌。少阳者，相火也，非寒也。光济欣而从之。此日利二行。适王德秀自外入，闻其利
之也，乃曰∶疮 首尾不可下。麻自悔其多言，业也已然，姑待之。比至食时，下黄涎
一合。日午问之，儿已索游于街矣。
彭吴张叟，年六十余岁，病热厥头痛，以其用涌药，时已一月间矣。加之以火，
其人先利脏腑，年高身困，出门见日而仆，不知人。家人惊惶，欲揉扑之。戴人曰∶大不可
扰。续与西瓜、凉水、蜜雪，少顷而苏。盖病患年老涌泄，目脉易乱，身体内有炎火，外有太阳
，是以自跌。若是扰之，便不救矣。惟安定神思，以凉水投之，待之以静。静便属水，自然
无事。若他医必惑，足以知戴人之谙练。
青州有一位姓王的男子，他的儿子十多岁，眼睛发红且多泪，多位医生治疗无效。张从正（戴人）见到后说：“这个孩子的眼病是由于在母腹中受到惊吓所致。”孩子的父亲说：“母亲怀孕时，曾在临清被围困。”张从正让孩子服用瓜蒂散加郁金，通过催吐和泻下，各排出数升痰涎。人们都嘲笑这种做法。孩子的母亲也说：“孩子肚子里没病，为什么要这样剧烈地呕吐和腹泻？”到了第二天，孩子的眼睛明亮清爽。李仲安看到后惊讶地说：“这方法真奇妙！”当天，张从正又让孩子头部、眉毛上方及鼻孔出血。呕吐之后，接着用了二钱通经散，七十粒舟车丸，孩子只吐了不到一半。又用一钱通经散投服。第二天，又给孩子服用三十粒舟车丸。共排便十八次，病就不再发作了。
河间人刘光济的儿子，才两岁，病后呕吐并昏沉，使用丁香、豆蔻等药物无效。恰好麻先生寄居在他家，就对刘光济说：“我有个小方子，无毒，人人都知道，您愿意听从吗？”刘光济说：“先生的话一定合乎道理，怎敢不听从。”麻先生说：“刘河间常讲：凉膈散可以治疗疮疡。张从正使用此方如神。况且《内经》说：少阳之气所至表现为呕吐涌逆。少阳属于相火，并非寒邪。”刘光济高兴地听从了这个建议。这天孩子排便两次。恰好王德秀从外面进来，听说孩子已经通便，就说：“疮疡从头到尾不可使用下法。”麻先生后悔自己多嘴，但事情已经发生，姑且等待结果。等到吃饭的时候，排出一合黄色痰涎。中午询问时，孩子已经在街上玩耍了。
彭吴地方的张老头，六十多岁，患热厥头痛，因为使用了涌吐药，时间已经过去一个月了。加上用火疗，此人先通了脏腑，年老体弱，出门见到太阳就跌倒，不知人事。家人惊慌失措，想要揉搓拍打他。张从正说：“绝对不可以打扰。”随后给予西瓜、凉水、蜜雪，一会儿就苏醒了。这是因为病人年老且经过涌吐泻下，目脉容易紊乱，身体内有炎火，外有太阳暴晒，所以自行跌倒。如果此时扰动他，就无法救治了。只有安定神思，用凉水给他喝，以静待之。静属水，自然就没有事了。如果是其他医生一定会迷惑，由此可知张从正的熟练精通。
A son of a man surnamed Wang in Qingzhou, aged over ten, suffered from red eyes and excessive tearing, to which many physicians had no effective remedy. Dai Ren (Zhang Congzheng) observed him and said, "This child's eye disease stems from fright sustained in the womb." The father replied, "During pregnancy, while in Linqing, they were besieged." Dai Ren prescribed Guiti San (Melon Peduncle Powder) with Yujin (Curcuma Aromatica Rhizome). Through inducing vomiting and purging, several sheng of phlegm-saliva were expelled upwards and downwards. People laughed at this approach. The mother also said, "There is no illness in the child's abdomen; why induce such severe vomiting and diarrhea?" By the next day, his eyes were bright and clear. Li Zhong'an was amazed upon seeing this, saying, "What a miraculous method!" On that same day, Dai Ren induced bleeding from the head, above the eyebrows, and from the nose. After vomiting, Tongjing San (Meridian-Penetrating Powder) 2 qian was administered, followed by 70 pills of Zhouche Wan (Boat-Chariot Pill), resulting in only partial vomiting. Another 1 qian of Tongjing San was given. The next day, 30 pills of Zhouche Wan were administered. After eighteen bowel movements, the disease did not recur.
The son of Liu Guangji from Hejian, only two years old, suffered from post-illness vomiting and lethargy. Treatments with Dingxiang (Caryophylli Flos) and Doukou (Amomi Fructus Rotundus) proved ineffective. Mr. Ma, who was staying at their home, told Guangji, "I have a small prescription that is non-toxic and well-known. Would you be willing to follow it?" Guangji replied, "Your words must be reasonable; how dare I not obey?" Mr. Ma said, "He Jian often stated: Liangge San (Cooling the Diaphragm Powder) can treat sores. Dai Ren used it with divine efficacy. Moreover, *Neijing* states: 'When Shaoyang arrives, it manifests as vomiting and surging.' Shaoyang corresponds to Ministerial Fire, not Cold." Guangji happily complied. That day, the child had two bowel movements. Wang Dexiu happened to enter from outside, heard of the purgation, and said, "Sores should never be treated with purgatives from beginning to end." Mr. Ma regretted speaking too much, but the action was already taken, so he waited. By mealtime, one he of yellow phlegm was discharged. At noon, upon inquiry, the child was already playing on the street.
An elder surnamed Zhang from Pengwu, over sixty years old, suffered from heat-jue headache. Having used emetic medicines for about a month, and additionally subjected to fire therapy, his bowels and viscera were first cleared. Due to his advanced age and physical exhaustion, he collapsed upon stepping out into the sunlight, losing consciousness. His family panicked and wanted to rub and beat him. Dai Ren said, "Absolutely do not disturb him." Subsequently, watermelon, cold water, and honey-snow were given, after which he revived shortly. This occurred because the patient was elderly and had undergone emesis and purging, causing the eye vessels to become disordered; internal inflammatory fire combined with external solar exposure led to his fall. If disturbed then, he could not be saved. Only by calming the spirit, administering cold water, and waiting quietly could he recover. Quietness belongs to Water, naturally resolving the issue. Other physicians would surely be confused; this demonstrates Dai Ren's expertise.