狐惑即牙疳、下疳之古名也。近时惟以“疳”呼之。下疳即狐也，蚀烂肛阴。牙疳即惑也，蚀咽腐龈，
脱牙、穿腮、破唇。因伤寒病后，余毒与湿 之为害也。或生斑疹之后，或生癖疾下利之后，其为患亦同。
其证则面色目 ，或赤或白，或黑，时时不一，喜睡，目不能闭，潮热声哑，腐烂之处，秽气熏人。若
胃壮能食，堪受攻药，或病势缓，治多全也。
百合病者，谓伤寒过期，留连不解，不分经络，百脉悉合为一病也。如寒似热，诸药无灵，欲饮不能
饮，欲食不能食，欲卧不能卧，欲行不能行，精神忽忽，如神若鬼，附其形体，而莫知所适从也。如脉数，溺
尿时辄头痛者，六十日乃愈。若溺时快然，但头眩者，二十日乃愈。
妇人伤寒，与男子治法同，惟产后经来，邪热乘虚而入血
室，另有治法。热入血室之证，昼日明了，夜则谵语，妄见神鬼，宜小柴胡汤加生地丹皮。若无汗则为表实
，加麻黄汗之。有汗则为表虚，加桂枝解之。若有发热恶寒之表证。已经发汗，虽无汗不加麻黄，再加桂枝以
解之。若有如疟之寒热，加麻黄、桂枝两解之。若厥而下利，则为中寒，去黄芩加姜附不须疑也。若发汗烦
渴，则为里热，去半夏合白虎，或加花粉、葛根。若胸胁少腹，或满硬，或作痛，则为瘀血，宜合桃仁承气
汤攻之。产后胎前，虽有多证，不能尽述，总不外阴阳表里之治。在临证者以意消息之耳。
狐惑病即古代所称的牙疳、下疳。近代仅以“疳”来称呼它。下疳就是“狐”，表现为腐蚀溃烂肛门和阴部；牙疳就是“惑”，表现为腐蚀咽喉、牙龈腐烂，牙齿脱落、面颊穿孔、嘴唇破裂。这是由于伤寒病后，余留的毒邪与湿邪共同作祟所致。也有在斑疹发出之后，或在癖积、痢疾腹泻之后发生的，其危害是一样的。其症状表现为面色和眼睛颜色异常，或红或白或黑，时刻变化不定，喜欢睡觉但眼睛无法闭合，潮热且声音嘶哑，腐烂之处散发出恶臭熏人。如果患者胃气尚壮实能进食，能够耐受攻伐药物，或者病情发展缓慢，治疗大多能痊愈。
百合病，是指伤寒病过了期限，迁延不愈，不分属于哪条经络，导致全身百脉合而为一病。症状如怕冷却似发热，各种药物无效，想喝水却喝不下，想吃东西却吃不下，想躺卧却躺卧不安，想行走却无法行走，精神恍惚，如同鬼神附体于身体，不知该听从什么。如果脉象数，小便时随即头痛的，六十天可以痊愈。如果小便时感觉畅快，只是头晕眩的，二十天可以痊愈。
妇女患伤寒，治疗方法与男子相同，只有在产后月经期间，邪热乘虚侵入血室（子宫及相关脉络），则有另外的治疗方法。热入血室的证候，白天神志清楚，夜晚则胡言乱语，妄见鬼神，适宜用小柴胡汤加生地黄、牡丹皮。如果没有汗，则为表实证，加麻黄发汗。如果有汗，则为表虚证，加桂枝解肌。如果有发热恶寒等表证，已经发过汗，即使无汗也不加麻黄，再加桂枝来解表。如果有像疟疾一样的寒热往来，加麻黄、桂枝双解表里。如果出现四肢厥冷并伴有腹泻，则是中寒证，去掉黄芩，加入干姜、附子，不必怀疑。如果发汗后出现烦躁口渴，则是里热证，去掉半夏，合用白虎汤，或者加天花粉、葛根。如果胸胁或少腹部胀满坚硬，或者疼痛，则是瘀血证，适宜合用桃仁承气汤攻下。产后及孕前的病症，虽然有很多，不能一一叙述，总归不外乎阴阳、表里的治法。在于临证医生根据具体情况灵活斟酌罢了。
Huo Huo disease is the ancient name for what is now known as cancrum oris (gangrenous stomatitis) and chancroid. In recent times, it is only referred to as "Gan" (nutritional deficiency/gangrene). Chancroid corresponds to "Hu" (Fox), characterized by erosion and ulceration of the anus and genitals. Cancrum oris corresponds to "Huo" (Delusion), characterized by erosion of the pharynx, rotting gums, tooth loss, perforation of the cheeks, and rupture of the lips. This is caused by residual pathogenic toxins and dampness after a Taiyang cold damage disease (Taiyang Shanghan). It may also occur after the eruption of macules and papules, or after chronic abdominal masses and dysentery/diarrhea; the harm inflicted is the same. The symptoms include abnormal coloration of the face and eyes, which may be red, white, or black, changing constantly. The patient prefers sleep but cannot close their eyes completely, suffers from tidal fever and hoarseness, and the eroded areas emit a foul odor. If the stomach qi is strong enough to eat and tolerate purgative treatments, or if the disease progression is slow, recovery is likely with treatment.
Bai He Bing (Lily Disease) refers to a condition where Shanghan (cold damage) has passed its expected duration, lingering unresolved. It does not belong to any specific meridian but involves all hundred vessels combining into one disease. Symptoms resemble cold yet feel like heat, and various medicines are ineffective. The patient desires to drink but cannot, desires to eat but cannot, desires to lie down but cannot rest, and desires to walk but cannot move. The spirit is vague and confused, as if possessed by spirits or ghosts attached to the body, leaving the patient unsure of what to do. If the pulse is rapid and headache occurs immediately upon urination, recovery takes sixty days. If urination feels comfortable but dizziness occurs, recovery takes twenty days.
Women suffering from Shanghan are treated similarly to men, except when postpartum or during menstruation, where pathogenic heat enters the Blood Chamber (Xue Shi - uterus and related collaterals) due to deficiency, requiring different treatment methods. For Heat Entering the Blood Chamber, the patient is lucid during the day but delirious at night, hallucinating spirits and ghosts. Xiao Chai Hu Tang (Minor Bupleurum Decoction) added with Sheng Di Huang (Rehmanniae Radix Preparata) and Mu Dan Pi (Moutan Cortex) is indicated. If there is no sweating, it indicates Exterior Excess; add Ma Huang (Ephedrae Herba) to induce sweating. If there is sweating, it indicates Exterior Deficiency; add Gui Zhi (Cinnamomi Ramulus) to release the exterior. If there are exterior signs of fever and aversion to cold, and sweating has already been induced, even without current sweating, do not add Ma Huang; instead, add Gui Zhi to resolve the exterior. If there are chills and fever resembling malaria, add both Ma Huang and Gui Zhi to resolve both aspects. If there is cold extremities with diarrhea, it indicates Interior Cold; remove Huang Qin (Scutellariae Radix) and add Gan Jiang (Zingiberis Rhizoma) and Fu Zi (Aconiti Lateralis Radix Praeparata) without hesitation. If sweating leads to irritability and thirst, it indicates Interior Heat; remove Ban Xia (Pinelliae Tuber) and combine with Bai Hu Tang (White Tiger Decoction), or add Hua Fen (Trichosanthis Radix) and Ge Gen (Puerariae Lobatae Radix). If there is fullness, hardness, or pain in the chest, hypochondrium, or lower abdomen, it indicates Blood Stasis; combine Tao Ren Cheng Qi Tang (Peach Kernel and Magnolia Bark Decoction) to purge. Although there are many conditions related to postpartum and pregnancy that cannot be fully listed, they generally fall under the treatments of Yin/Yang and Exterior/Interior. It is up to the practicing physician to judge and adjust according to the specific situation.