百合病者，谓无经络，百脉一宗，悉致病也。多因伤寒虚劳，大病之后不平复，变成斯
疾也。其状，意欲食，复不能食，常默默，欲得卧，复不得卧，欲出行，复不能行，饮食或
有美时，或有不用饮时。如强健人，而卧不能行，如有寒，复如无寒，如有热，复如无热，
口苦，小便赤黄。百合之病，诸药不能治，得药则剧吐利，如有神灵者。身形如和，其人脉
微数，每尿辄头痛，其病六十日乃愈。若尿头不痛，淅淅然者，四十日愈。若尿快然，但眩
者，二十日愈。体证或未病而预见，或病四五日而出，或病二十日、一月微见，其状，恶寒
而呕者，病在上焦也，二十三日当愈。其状，腹满微喘，大便坚，三四日一大便，时复小
溏者，病在中焦也，六十三日当愈。其状，小便淋沥难者，病在下焦也，四十三日当愈。
各随其证，以治之耳。
夫狐惑二病者，是喉、阴之为病也。初得状如伤寒，或因伤寒而变成斯病。其状，默默
欲眠，目瞑不得眠，卧起不安。虫食于喉咽为惑，食于阴肛为狐。恶饮食，不欲闻食臭，其
人面目翕赤翕黑翕白。食于上部其声嗄，食于下部其咽干。此皆由湿毒瓦斯所为也。
凡得伤寒、时气、热病，腹内有热，又人食少，肠胃空虚，三虫行作求食，食人五脏及
下部。 病之候，齿龈无色，舌上尽白，甚者唇里有疮，四肢沉重，忽忽喜眠，如此皆
为虫食其肛。肛烂见五脏即死。当数看其上唇内，有疮唾血，唇内如粟疮者，则心内懊
，此虫在上，食其五脏；下唇内生疮者，其人不寤，此虫食下部，皆能杀人。
百合病，是指没有特定的经络归属，但全身百脉同出一源，因而全部受到致病因素影响。多因伤寒或虚劳，在大病之后未能完全康复，从而演变成这种疾病。其症状表现为：想吃东西，却又吃不下；常常沉默不语；想睡觉，却又睡不着；想外出活动，却又无法行动；饮食有时觉得美味，有时又完全不想进食。病人看起来像健康人一样，但实际卧不能行，好像怕冷，其实并不真冷；好像发热，其实并不真热；口苦，小便颜色深黄。百合病用各种药物都难以治愈，服药后往往剧烈呕吐腹泻，仿佛有神灵作祟。身体外形看似正常，但脉象微数。每次排尿时若伴随头痛，病程需六十日才能痊愈。如果排尿时不头痛，仅有轻微恶寒感（淅淅然），四十日可愈。如果排尿时感觉畅快，仅伴有头晕，二十日可愈。
体征或未发病前已显现预兆，或在发病四五日后出现，或在发病二十日、一个月后才轻微显现。其症状中，若见恶寒且呕吐，说明病位在上焦，二十三日应当痊愈。若见腹部胀满、轻微气喘、大便干结、三四天才解一次大便且偶尔稀溏，说明病位在中焦，六十三日应当痊愈。若见小便淋漓困难，说明病位在下焦，四十三日应当痊愈。治疗应随证候不同而分别施治。
狐惑是两种疾病的合称，主要病变部位在咽喉和阴部。初起症状类似伤寒，或因患伤寒后转变为这种病。其症状表现为：沉默嗜睡，眼睛闭合却睡不着，坐卧不安。虫蚀咽喉称为“惑”，虫蚀阴肛称为“狐”。病人厌恶饮食，不想闻食物的气味，面色时而发红、时而发黑、时而发白。虫蚀上部者声音嘶哑，虫蚀下部者咽喉干燥。这都是由湿毒之气所致。
凡是患有伤寒、时气、热病的人，腹内有热，加之进食少，肠胃空虚，导致三虫（泛指寄生虫）活动求食，侵蚀五脏及下部。病症表现包括：齿龈颜色淡白无血色，舌面全白，严重者嘴唇内侧生疮，四肢沉重，神情恍惚喜睡，这些都属于虫蚀肛门的情况。若肛门腐烂露出内脏则必死无疑。应当经常检查其上唇内侧，若有疮疡并唾血，唇内如粟米状疮疹，这是心内烦闷懊恼的表现，说明虫在上部，侵蚀五脏；下唇内侧生疮者，病人神志昏沉不醒，说明虫在下部侵蚀，这两种情况都能致人死亡。
Baihe disease refers to a condition where there is no specific meridian involvement, yet all the vessels share a common origin and are consequently affected by pathogenic factors. It often arises from shanghan (cold damage) or xu lao (deficiency consumption), evolving into this illness after a major disease fails to fully resolve. Its manifestations include: desiring to eat but being unable to do so; frequently remaining silent; desiring to lie down but being unable to sleep; desiring to walk but being unable to move; food may sometimes taste good, while at other times there is no desire to eat. The patient appears healthy but cannot walk while lying down; they feel cold yet are not actually cold; they feel hot yet are not actually hot; bitter taste in the mouth, and dark yellow urine. Baihe disease is difficult to cure with various medicines; administering drugs often causes severe vomiting and diarrhea, as if possessed by spirits. The body shape appears normal, but the pulse is slightly rapid. If headache occurs upon urination, recovery takes sixty days. If there is no headache upon urination but only a slight sensation of chilliness (xixiran), recovery takes forty days. If urination feels smooth but dizziness persists, recovery takes twenty days. Signs may appear before the onset of illness, four to five days after onset, or mildly manifest after twenty days or a month. If chills and vomiting occur, the disease is in the upper jiao (upper burner), and recovery should take twenty-three days. If abdominal fullness, slight wheezing, dry stool, defecation once every three to four days, and occasional loose stools occur, the disease is in the middle jiao (middle burner), and recovery should take sixty-three days. If dysuria (difficult and dribbling urination) occurs, the disease is in the lower jiao (lower burner), and recovery should take forty-three days. Treatment should follow the specific symptoms.
Huhu comprises two diseases affecting the throat and genitalia. Initially resembling shanghan, it may develop from shanghan. Symptoms include silence and somnolence, inability to sleep with eyes closed, and restlessness when lying or sitting. Parasites eating the throat are called "huo" (confusion), while those eating the genitalia and anus are called "hu" (fox). The patient dislikes food, has no desire to smell food odors, and their face alternates between red, black, and white. Parasites in the upper part cause hoarseness; parasites in the lower part cause dry throat. These are caused by damp-toxic qi.
In cases of shanghan, shiqi (seasonal qi pathogens), or rebing (heat disease), internal heat combined with poor diet leads to empty stomach and intestines, allowing san chong (three parasites) to become active and feed on the five zang organs and lower parts. Signs include colorless gums, a completely white tongue, ulcers inside the lips in severe cases, heavy limbs, and a vague, sleepy state. All these indicate parasites eating the anus. If the anus rots exposing the viscera, death ensues. One should frequently examine the inner upper lip; if ulcers and blood-spitting saliva are present, with millet-like eruptions inside the lip, it indicates mental restlessness (ao nu), meaning parasites are in the upper part eating the five zang organs. If ulcers form on the inner lower lip, the patient is unconscious, indicating parasites are eating the lower part; both can be fatal.