小儿有 患，服汤药，其肠胃脆嫩，不胜药气，便致烦毒也，故谓之中毒。
蠼 虫，长一寸许，身有毛如毫毛，长五六分，脚多而甚细，多处屋壁之间。云其游走
遇人，则尿人影，随所尿着影处，人身即应之生疮。世病之者，多着腰。疮初生之状，匝匝
起，初结 瘰，小者如黍粟，大者如麻豆，渐染生长阔大，绕腰，生脓汁成疮也。
人有附皮肉生、与肉色无异，如麦豆大，谓之疣子，即疣目也。亦有三数个相聚生者。
割破里状如筋而强，亦微有血，而亦复生。此多由风邪客于皮肤，血气变化所生。故亦有药
治之瘥者，亦有法术治之瘥者，而多生于手足也。
腑脏有热，热气上冲于头，而复有风湿乘之，湿热相搏，折血气而变生疮也。
虱者，按《九虫论》云∶蛲虫多所变化，亦变为虱。而小儿头栉沐不时，则虱生。滋长
偏多，啮头，遂至生疮。疮处虱聚也，谓之虱窠。然人体性自有偏多虱者。
白秃之候，头上白点斑剥，初似癣，而上有白皮屑，久则生痂HT 成疮，遂至遍头
。洗刮除其痂，头皮疮孔如筋头大，里有脓汁出，不痛而有微痒，时其里有虫，甚细微难见
。《九虫论》亦云∶是蛲虫动作而成此疮，乃至自小及长大不瘥，头发秃落。故谓之白秃也
腑脏热甚，热气冲发皮肤，而外有风湿折之，与血气相搏，则生疮。其状，初赤起 瘰
，后乃生脓汁，随瘥随发。或生身体，或出头面，或身体头面皆有也。
小儿患有此病，服用汤药后，因其肠胃脆弱娇嫩，无法承受药气的刺激，便导致烦热毒邪内生，所以称之为中毒。
蠼螋虫（一种昆虫），体长约一寸左右，身上长有像毫毛一样的细毛，长度约五六分，脚多且非常细，常栖息在屋壁之间。据说它游走时遇到人，就会向人的影子排尿，尿液沾到影子的部位，人体相应部位就会生出疮疡。世人患这种病的人，多发生在腰部。疮初起时的形态，呈环状簇生，起初结成瘰疬（淋巴结结核或皮下结节），小的如黍米、粟米，大的如麻子、豆子，逐渐蔓延生长变得宽阔巨大，环绕腰部，化脓汁液形成疮疡。
有人皮肤上附着肉色的小赘生物，颜色与肌肉无异，大小如麦粒、豆粒，称为疣子，也就是疣目。也有三五颗聚集生长的情况。割破后内部质地像筋一样坚硬，微微出血，但之后又会重新生长。这多由风邪客居于皮肤，导致血气变化而生。因此，有的用药物治疗可以痊愈，有的用法术治疗也可以痊愈，但多生于手足部位。
脏腑内有热邪，热气向上冲逆至头部，同时又受到风湿之邪的侵袭，湿热相互搏结，阻碍血气运行而变生疮疡。
虱子，根据《九虫论》记载：蛲虫多有变化，也能变为虱子。如果小儿洗头梳头沐浴不及时，就会滋生虱子。滋长过多，叮咬头部，从而导致生疮。生疮处是虱子聚集的地方，称为“虱窠”。然而，人体体质自然就有容易生虱的情况。
白秃疮的症状，头上出现白色斑点剥落，起初类似癣，上面有白色皮屑，时间久了则结痂形成疮疡，甚至遍及整个头部。清洗刮除其痂皮后，头皮上的疮孔如针头大小，里面有脓汁流出，不痛但有轻微瘙痒，有时可见里面有虫子，非常细微难以看见。《九虫论》也说：这是蛲虫活动而造成的疮疡，甚至从幼小到长大都不能痊愈，头发脱落。所以称为白秃。
脏腑热势极盛，热气冲发于皮肤，外部又有风湿之邪侵袭，与血气相互搏结，从而生疮。其症状表现，起初发红并隆起成结节，随后产生脓汁，随着病情好转又反复发作。可能生于身体，也可能生于头面，或者身体和头面都有。
Pediatric patients who suffer from this condition, after taking herbal decoctions, may experience internal heat and toxicity causing restlessness because their gastrointestinal tract is fragile and tender, unable to withstand the medicinal qi; thus it is termed "poisoning" (Zhongdu).
The *Qu Sou* (earwig), approximately one cun in length, has hairs on its body resembling fine bristles, about five or six fen long, with numerous very thin legs, often found dwelling between walls. It is said that when it moves and encounters a person, it urinates onto the person's shadow; where the urine touches the shadow, sores will appear on the corresponding part of the human body. In the general population suffering from this disease, it mostly affects the waist. The initial appearance of the sore is clustered in a ring-like pattern, initially forming nodules (Luoli); small ones are like millet grains, large ones like hemp seeds or beans. They gradually spread and grow larger, encircling the waist, producing pus and forming sores.
Some individuals have flesh-colored growths attached to the skin, indistinguishable in color from normal muscle, sized like wheat or bean grains, called warts (Youzi), also known as wart eyes. There are also cases where three or more grow together. When cut open, the interior resembles tough tendons, with slight bleeding, yet they regenerate. This is mostly caused by wind pathogens lodging in the skin, leading to changes in blood and qi. Therefore, some can be cured with herbal medicine, while others can be cured with magical arts, and they mostly occur on the hands and feet.
When there is heat within the zang-fu organs, hot qi rushes upward to the head, and simultaneously, wind-dampness invades. The damp-heat struggles together, obstructing the flow of blood and qi, thereby generating sores.
Regarding lice, according to the *Treatise on Nine Parasites*, pinworms (Nuochong) undergo various transformations and can become lice. If infants do not comb their hair or bathe regularly, lice will breed. Excessive breeding leads to biting the scalp, eventually causing sores. The area where sores form is where lice gather, termed "louse nests" (Shike). However, some people naturally have a constitution prone to lice infestation.
The manifestation of white alopecia (Baitu) involves white patches peeling off on the scalp, initially resembling tinea, with white scales on top. Over time, scabs form and turn into sores, potentially spreading over the entire head. After washing and scraping off the scabs, the sores on the scalp resemble pinheads, discharging pus from within. There is no pain but slight itching, and sometimes tiny, hard-to-see insects are visible inside. The *Treatise on Nine Parasites* also states: these sores are caused by the activity of pinworms, persisting from childhood to adulthood without healing, resulting in hair loss. Hence, it is called white alopecia.
When the heat in the zang-fu organs is severe, hot qi erupts into the skin, and externally, wind-dampness attacks, struggling with blood and qi, thus generating sores. The presentation begins with redness and raised nodules, followed by pus formation. The condition recurs even as it heals. Sores may appear on the body, on the head and face, or both.