Answer:
This rash is most likely is erythema toxicum, also known as newborn rash.
Step-by-step explanation:
Erythema toxicum is also known as erythema toxicum neonatorum (ETN) or toxic erythema of the newborn — is a common rash seen in full-term newborns. It usually shows up in the first few days after birth and disappears within a week.
Up to half of all newborns will have ETN. The rash usually be on the baby's face, chest, arms, and legs,. It's a blotchy red rash with small bumps that may be filled with fluid. The fluid might look like pus, but there is no infection.