一、热毒熏蒸胎儿，导致胎儿多受损伤，虽然胎儿受损，但母亲实际上并无大碍。这是因为麻疹与天花不同，天花宜使体内充实，所以胎衣脱落时母亲容易死亡；麻疹宜使体内空虚，所以胎儿排出后母亲容易存活。然而，与其让胎儿死去而母亲存活，不如母子双全那样更好。
一、出麻疹的症状，相比出天花似乎较轻，但如果调理治疗不当，其灾祸反而很快降临。因为天花是由胎毒引发，其病情的轻重多少，自然可以预先判断。至于麻疹，虽然也是由感受邪气而引发，但轻症可转为重症，重症也可转为轻症，完全取决于调理治疗是否得当，这样才能保证没有忧患。因此，麻疹的饮食禁忌比天花更为严格。如果吃了鸡肉和鱼肉，就会终身皮肤出现像鸡皮一样的粟粒状突起，只是在遇到天行（流行性）出疹的时候，又要重新发作。误食油腻肉类，那么在每年出疹的月份，必然会出现下痢脓血；误食盐分和醋，就会患上咳嗽，并且在遇到出疹的时候，必定复发咳嗽；误食五辛（葱、蒜、韭、薤、兴渠等辛辣刺激性食物）之物，会不时出现惊悸发热，必须等到过了四十九天，或者一百天之后，才可以不再忌讳饮食。
1. Heat-toxin steams the fetus, causing it to suffer injury; although the fetus is injured, the mother remains essentially unharmed. This is because measles (Rash) differs from smallpox (Pox). Smallpox requires internal fullness, so when the placenta falls off, the mother is prone to death. Measles requires internal emptiness, so after the fetus is expelled, the mother is prone to survival. However, rather than the fetus dying while the mother survives, it is better for both mother and child to survive intact.
2. The symptoms of erupting measles appear milder compared to erupting smallpox; however, if regulation and treatment are improper, disaster may follow swiftly. Smallpox arises from fetal toxin, so its severity and quantity can be predicted in advance. As for measles, although it also arises from pathogenic factors, mild cases can become severe, and severe cases can become mild; this depends entirely on whether regulation and treatment are appropriate, thereby ensuring safety. Therefore, dietary taboos for measles are stricter than those for smallpox. If chicken or fish is consumed, the skin will permanently develop a millet-grain-like texture resembling "chicken skin," which will re-emerge during epidemics of rash. If oily meat is mistakenly eaten, dysentery with pus and blood will inevitably occur during the monthly period of rash eruption each year. If salt and vinegar are mistakenly eaten, cough will ensue, and it will definitely recur during periods of rash eruption. If five pungent spices (Wu Xin: typically garlic, scallion, leek, chives, and asafoetida) are mistakenly consumed, there will be intermittent fright and fever; one must wait until after forty-nine days, or even one hundred days, before dietary restrictions can be lifted.