As a matter of fact, the causes of these skin diseases are also quite similar, that is, little kids are not that "clean" due to too much sweat and saliva that but is not removed in time, so that the "covered" skin happens to diseases.
其实，这些皮肤病的起因也大同小异，都是因为小朋友不够“清爽”，汗水、口水流得多，又不及时擦干，“捂”出了皮肤病。