心 者，由脏虚，诸虫在肠胃间，因虚而动，攻食心，谓之心 。初不觉他病
，忽忽嗜睡，四肢沉重。此 或食心，则心烦闷懊痛，后乃侵食余处。
诊其脉沉而细，手足冷，内湿 在心也。
人有嗜甘味多，而动肠胃间诸虫，致令侵食腑脏，此犹是 也。凡食五味之物，皆
入于胃，其气随其腑脏之味而归之。脾与胃为表里，俱象土，其味甘，而甘味柔润于脾胃。
脾胃润则气缓，气缓则虫动，虫动则侵食成疳 也。但虫因甘而动，故名之为疳也。
其初患之状，手足烦疼，腰脊无力，夜卧烦躁，昏昏喜妄，嘿嘿眼涩，夜梦颠倒，饮食
无味，面失颜色，喜睡，起即头眩，体重， 胫酸疼。其上食五脏，则心内懊恼
；出食咽喉及齿龈，皆生疮，出黑血，齿色紫黑；下食肠胃，下利黑血；出食肛门，生
疮烂开。胃气虚逆，则变呕哕。急者数日便死；亦有缓者，止沉嘿，支节疼重，食饮减少，
面无颜色，在内侵食，乃至数年，方上食口齿生疮，下至肛门伤烂，乃死。
又云∶五疳，一是白疳，令人皮肤枯燥，面失颜色。二是赤疳，内食人五脏，令人头发
焦枯。三是蛲疳，食人脊膂，游行五脏，体重浮肿。四是疳 ，食人下部疼痒，腰脊挛
急。五是黑疳，食人五脏，多下黑血，数日即死。凡五疳，白者轻，赤者次，蛲疳又次之，
疳又次之，黑者最重。皆从肠里上食，咽喉齿龈并生疮，下至谷道伤烂，下利脓
血，呕逆，手足心热，腰痛嗜睡。秋冬可，春夏极。
又云∶面青颊赤，眼无精光，唇口燥，腹胀有块，日日瘦损者是疳。食人五脏，至死不
觉。
又云∶五疳缓者，则变成五蒸。五蒸者，一曰骨蒸，二曰脉蒸，三曰皮蒸，四曰肉蒸，
五曰血蒸。其根源初发形候虽异，至于蒸成，为病大体略同。皆令人腰疼心满，虚乏无力，
日渐羸瘦，或寒热无常，或手足烦热，或逆冷，或利，或涩，或汗也。五蒸别自有论，与虚
劳诸病相从也。
心疳，是由于脏腑虚弱，各种寄生虫在肠胃之间，趁着虚弱的时机活动，侵蚀心脏，称为心疳。起初没有察觉其他病症，只是精神恍惚、嗜睡、四肢沉重。这种病如果侵蚀心脏，就会引起心烦闷乱、懊恼疼痛，随后才会侵蚀身体的其他部位。诊察其脉象沉而细，手足冰冷，这是湿气内蕴于心所致。
人如果嗜好甜味过多，就会引发肠胃间的寄生虫活动，导致它们侵蚀脏腑，这仍然属于疳病。凡是吃五味食物，都会进入胃中，其气机随着脏腑对味道的偏好而归属相应脏腑。脾与胃互为表里，都象征土，味道为甘，甘味能使脾胃滋润柔润。脾胃滋润则气机舒缓，气机舒缓则寄生虫活动，寄生虫活动就会侵蚀机体形成疳病。只是因为虫子因甘味而动，所以命名为疳。
初患此病的症状包括：手足烦痛，腰脊无力，夜间睡眠烦躁，神志昏沉多梦，沉默寡言且眼睛干涩，夜间梦境颠倒，饮食无味，面色失去光泽，喜欢睡觉，起身时头晕目眩，身体沉重，小腿酸痛。如果虫邪向上侵蚀五脏，则心中懊恼；向外侵蚀咽喉及齿龈，则生疮疡，流出黑血，牙齿颜色紫黑；向下侵蚀肠胃，则下利黑血；从肛门排出时，肛门生疮溃烂。胃气虚弱上逆，则变为呕吐呃逆。病情急的几天内就会死亡；也有病情缓慢的，仅表现为神情抑郁，肢体关节疼痛沉重，饮食减少，面色无华，在体内侵蚀数年，然后向上侵蚀口齿生疮，向下侵蚀肛门溃烂，最终死亡。
又说：五疳中，一是白疳，使人皮肤干枯粗糙，面色无华。二是赤疳，向内侵蚀五脏，使人头发焦枯。三是蛲疳，侵蚀人的脊柱，游走于五脏，身体沉重浮肿。四是疳（此处原文似有缺字或特指某种疳，结合上下文推测可能指眼疳或其他，但依原文提取），侵蚀人体下部，疼痛瘙痒，腰脊拘挛紧急。五是黑疳，侵蚀五脏，多下黑血，数日内即死。五种疳病中，白疳最轻，赤疳次之，蛲疳再次之，第四种疳又次之，黑疳最重。这些疳病都是从肠中向上侵蚀，咽喉齿龈均生疮疡，向下至肛门损伤溃烂，下利脓血，呕吐逆气，手足心热，腰痛嗜睡。秋冬季节病情稍缓，春夏季节病情极重。
又说：面色青而两颊红，眼睛缺乏神采，嘴唇口腔干燥，腹部胀大且有痞块，日渐消瘦的是疳病。虫邪侵蚀五脏，直到死亡都不自知。
又说：五疳病程缓慢者，会转变为五蒸。五蒸分别是：一曰骨蒸，二曰脉蒸，三曰皮蒸，四曰肉蒸，五曰血蒸。它们的根源和初发时的症状虽然不同，但等到形成“蒸”证时，致病的大体情况大致相同。都会使人腰痛、心胸满闷，虚弱乏力，日渐消瘦，或者寒热无常，或者手足烦热，或者四肢厥冷，或者腹泻，或者便秘，或者出汗。五蒸另有专门论述，与虚劳诸病相关联。
Xin Gan (Heart Caloric Disease), caused by the deficiency of Zang-Fu organs, allows various parasites to move within the intestines and stomach. Taking advantage of this deficiency, they attack and consume the Heart, which is termed Xin Gan (Heart Caloric Disease). Initially, no other symptoms are perceived; the patient experiences mental confusion, excessive sleepiness, and heaviness in the four limbs. If this condition attacks the Heart, it causes mental restlessness, oppression, and pain, before subsequently invading other parts of the body. Palpation reveals a deep and fine pulse, with cold hands and feet, indicating dampness accumulating in the Heart.
Excessive consumption of sweet flavors stimulates the movement of parasites in the intestines and stomach, leading them to invade and consume the Zang-Fu organs; this still falls under the category of Gan disease (Caloric Disease). All foods of the five flavors enter the Stomach, and their Qi returns to the respective Zang-Fu organs according to their flavor preferences. The Spleen and Stomach are exterior-interior pairs, both corresponding to Earth, with a sweet flavor. Sweetness moistens and softens the Spleen and Stomach. When the Spleen and Stomach are moistened, the Qi becomes sluggish; when Qi is sluggish, parasites move, and their movement leads to invasion and consumption, resulting in Gan disease (Caloric Disease). Since the parasites move due to sweetness, it is named Gan (Caloric Disease).
The initial manifestations include: vexing pain in the hands and feet, weakness in the lower back and spine, irritability during sleep at night, drowsiness with frequent dreaming, taciturnity with dry eyes, inverted dreams at night, loss of taste in food, pallor, preference for sleep, dizziness upon rising, heavy body weight, and soreness in the shins. If the parasites ascend to consume the Five Zang, there is internal vexation; if they descend to consume the throat and gums, ulcers form, black blood is discharged, and teeth turn purple-black; if they descend to consume the intestines and stomach, black blood appears in the stool; if they exit via the anus, ulcers form and rot. Deficiency and rebellious Qi of the Stomach lead to vomiting and hiccups. In acute cases, death occurs within a few days; in chronic cases, the patient may only exhibit depression, heaviness and pain in the joints, reduced appetite, and pallor. The invasion continues internally for years until ulcers form on the mouth and teeth from above, and the anus is damaged and rotted from below, leading to death.
It is also stated: Among the Five Gan diseases, the first is Bai Gan (White Caloric Disease), causing dry and rough skin and pallor. The second is Chi Gan (Red Caloric Disease), consuming the Five Zang internally and causing hair to become brittle and dry. The third is Tiao Gan (Pinworm Caloric Disease), consuming the spine, wandering through the Five Zang, causing heavy body and edema. The fourth is [missing character] Gan, causing pain and itching in the lower body, and stiffness and urgency in the lower back and spine. The fifth is Hei Gan (Black Caloric Disease), consuming the Five Zang, often resulting in black blood in the stool, leading to death within a few days. Among the five, White Gan is the mildest, Red Gan is next, Pinworm Gan is next, the fourth Gan is next, and Black Gan is the most severe. All these Gan diseases ascend from the intestines, causing ulcers in the throat and gums, and descending to damage and rot the anus, resulting in bloody and purulent diarrhea, vomiting, heat in the palms and soles, lower back pain, and sleepiness. The condition is milder in autumn and winter but extremely severe in spring and summer.
It is also stated: A blue complexion with red cheeks, lackluster eyes, dry lips and mouth, abdominal distension with masses, and progressive emaciation indicate Gan disease (Caloric Disease). The parasites consume the Five Zang, and the patient remains unaware until death.
It is also stated: Chronic Gan diseases may transform into the Five Zheng (Five Steaming Disorders). The Five Zheng are: 1. Gu Zheng (Bone Steaming), 2. Mai Zheng (Vessel Steaming), 3. Pi Zheng (Skin Steaming), 4. Rou Zheng (Flesh Steaming), and 5. Xue Zheng (Blood Steaming). Although their origins and initial presentations differ, once the "Steaming" pathology is established, the general nature of the disease is similar. They all cause lower back pain, chest fullness, weakness and fatigue, progressive emaciation, irregular fever or chills, vexing heat in the hands and feet, cold extremities, diarrhea, constipation, or sweating. The Five Zheng have separate discussions and are related to various deficiency-consumption diseases.