One specific type of viral exanthem that dermatologists have seen with COVID is a morbilliform rash, meaning a measles-like ...

MedlinePlus. Cellulitis. Allmon A, Deane K, Martin KL. Common skin rashes in children. Am Fam Physician. 2015;92(3):211-216. Merck Manual Professional Version. Rash in Infants and Young Children.

In other cases, the rash may affect less common areas ... including COVID-19. In fact, children are "a little more prone to these skin reactions with viruses than adults are," Walls explains.