The causes of neonatal skin conditions vary. For instance, milia are caused by blocked sweat glands, whereas erythema toxicum is linked to the immature immune system of the newborn. Seborrheic dermatitis is thought to be due to an overgrowth of skin yeast, and impetigo is caused by bacterial infection, typically Staphylococcus aureus or Group A Streptococcus. Diaper dermatitis results from prolonged exposure to wet or soiled diapers.
