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The infant's innocence is uncarved, rarely suffering from the "Five Eruptions" (referring to five types of eruptive skin diseases such as smallpox, measles, spots, sores, and carbuncles), and there are no diagnoses of good or bad prognoses. For minor sores and ulcers, they can naturally be treated by washing and applying dressings; this is what is meant by frequent bathing and changing clothes to promote external circulation and prevent disease.

If medication is unavoidable for treatment, it belongs to the purgative method. However, it is essential to simultaneously regulate the wet nurse for certainty. Severe conditions are recorded in previous specialized sections without difference. It is merely that among infants, the most common afflictions are those like Dan Du (carbuncle toxin/red spreading erysipelas). Therefore, these are now detailed exclusively.

Dan Du receives toxin before form manifests, and illness appears after life begins. This is caused by improper fetal nourishment. The method for preliminary identification: if an infant inexplicably produces thick ocular discharge, or has red halos around the eyelids, slight asthma, and cries restlessly at night, these are signs of impending Dan Du. Urgently administer drugs such as Lan Gen (Scrophulariae Radix) to secretly dissipate the toxin. If redness and swelling have already appeared, immediately use Yun Tai (Brassica rapa var. pekinensis) and similar herbs externally to blunt its sharpness. However, one must combine sucking, Bian (pricking bloodletting), washing, and dressing methods to achieve full efficacy.

Tai Re Dan Du (Fetal Heat Carbuncle Toxin): Initially presenting with bright red swelling wandering all over the body, it is caused by extreme heat-toxin qi clashing with blood, allowing wind to take advantage. Hence, it is also called Chi You Feng (Red Wandering Wind). Initially, Sheng Ma Ge Gen Tang (Ephedra and Kudzu Decoction) should be used to release the exterior. Subsequently, Bai Jie San (Hundred Dissolution Powder) and Qu Feng San (Wind-Expelling Powder) should be used to clear the heat. In severe cases, Da Lian Qiao Yin (Large Forsythia Decoction) is used. If abdominal distension occurs and the infant refuses milk, it indicates toxin qi entering the interior; Zi Xue San (Purple Snow Powder) should be administered to purge. Externally, apply sucking, pricking, and washing, followed immediately by applying slices of lean pork. After about an hour, change the dressing. In severe cases, change twice daily. After three days, if the body cools, the abdomen softens, the voice becomes clear, and feeding returns to normal, it is a favorable sign. Flesh at the pricked sites remaining active indicates a favorable prognosis; the opposite indicates an unfavorable prognosis.

Dan Du originating from the abdomen and back, flowing into the limbs, is favorable. Originating from the limbs, flowing into the abdomen, back, and scrotum, is unfavorable.

Tai Jing Dan Du (Fetal Shock Carbuncle Toxin): Initially, water-blister-like bumps appear on the face with slightly red roots, appearing and disappearing unpredictably. Next, the neck becomes red like pearls. Subsequently, it spreads to between the chest and breasts. This is caused by the pregnant mother experiencing shock, which transmits to the fetus. First, wash the eyes with Si Sheng San (Four Sages Powder). Internal medication follows the same protocol as Fetal Heat Dan Du. If there is slight phlegm, asthma, or convulsions, add a small amount of anti-shock medication.

Shi Zhi Dan Du (Food Stagnation Carbuncle Toxin): Initially presenting with red halos, progressing slowly, unlike the sudden speed of Fetal Heat. This is caused by food stagnation. Treatment should first focus on resolving food stagnation. If Dan Du persists after food stagnation is resolved, use the same medication as for Fetal Heat Dan Du.

Sucking and Pricking Methods: For treating Dan Du, urgently have someone boil Gan Cao (Licorice Root) into a concentrated decoction to rinse the mouth clean. Then, suck over the affected area thoroughly to gather the toxin in one place, followed by washing and applying dressings, which will naturally prove effective. In severe cases, after sucking, proceed to the pricking method. If red halos spread throughout the body, making complete pricking difficult, have someone suck several areas on the chest, back, and limbs before pricking them. Allow slight bleeding to vent the toxin. Red blood indicates mild condition, purple indicates severe, and black indicates death. Alternatively, if white juice flows out like bright pearls or crystal strands sticking to the hand, it is severe. After pricking, wash with medicinal liquid and apply thin slices of lean pork. Change the dressing after about an hour. In severe cases, change twice daily. If swelling does not fully subside the next day, re-evaluate and perform pricking again, washing and dressing as before. However, do not scrape all blood during pricking; if all blood is removed, yellow fluid will flow out. If the body is weak, unpredictable changes may occur because Qi cannot exist independently after Blood loss.

Furthermore, infants within one hundred days of birth should not undergo pricking, as their muscles cannot withstand it. If the lesion is on the head, lay the infant supine with the head lower, and use a Pi Zhen (Bilade needle) to prick from bottom to top, piercing laterally to bleed, allowing toxin to exit from the crown. Do not use the general pricking method; apply dressings as before.

Although Dan Du has many names, its source is one. Applying the above methods generally will yield verified results. (Pricking method is seen in the first volume, Acupuncture and Pricking Section.)

For treating Wind Dan, it is appropriate to resolve toxicity and support the interior, ensuring slight bowel movement to allow Yuan Qi (Original Qi) to protect internally and expel external pathogens. Use caution with strong purgatives like Xiao Huang (Mirabilite and Rhubarb). If dispersing is excessive, leading to exterior deficiency heat where redness does not recede, use Bu Zhong Yi Qi Tang (Tonify the Middle and Augment the Qi Decoction) added with Fang Feng (Saposhnikovia Root) and Bai Zhi (Angelica Dahurica). If cold-cooling is excessive, leading to stomach deficiency heat where redness does not recede, use Yi Gong San (Yi Gong Powder) added with Sheng Ma (Cimicifugae Rhizoma) and Chai Hu (Bupleuri Radix). If accompanied by convulsions, use Si Jun Zi Tang (Four Gentlemen Decoction) added with Sheng Ma, Dang Gui (Angelica Sinensis), and Gou Teng (Uncariae Ramulus cum Uncis). If Dan Du has resolved but fever, thirst, and anorexia persist, use Qi Wei Bai Zhu San (Seven-Ingredient Atractylodes Macrocephala Powder).