网上说可能是新冠病毒，一些孩子得病毒，皮肤出现这样，大人应该尽快打疫苗，免得把病毒传染给孩子。link 见内。

https://timesofindia.indiatimes.com/life-style/parenting/toddler-year-and-beyond/coronavirus-skin-symptoms-that-could-be-signs-of-the-dreaded-mis-c-in-kids/articleshow/83174280.cms