By Wond PregThe good thing is, there are a lot of birthmarks and rashes that babies get, and only a small amount of those are scary! Milia and neonatal acne are commonly seen on baby’s face and will improve on their own. A splotchy red rash may be erythema toxicum neonatorum (baby acne) in the first few days of life, or may be a heat rash if the baby was a little over-bundled. Importantly, a blistering rash (i.e., fluid-filled bubbles) might be a number of normal or benign conditions but also could be a sign of infection you should have checked out by a doctor.