What is a primary characteristic of erythema toxicum?

Erythema toxicum is a common and benign skin condition observed in newborns, typically appearing within the first few days after birth. A primary characteristic of this condition is the presence of small white or yellowish bumps, also known as pustules, which are surrounded by a red halo or erythema. This pattern resembles white bumps against a red background, indicating inflammation.

The condition is generally self-limiting and resolves without treatment within a week or two, reflecting the normal adaptation of the infant’s immune system to the external environment. This distinguishes it from conditions involving blisters filled with fluid or rashes that are particularly itchy or involve peeling skin, which are indicative of other dermatological issues. Understanding these characteristics helps in differentiating erythema toxicum from other more serious skin conditions in neonates.