About 40% of newborns develop milia, and up to 20% develop neonatal acne in the first weeks of life. Both look alarming to new parents but are benign and self-resolving.
What Milia Are
Milia are tiny white or yellowish cysts, 1–2 mm in size, typically appearing on the nose, cheeks, and forehead. They are caused by keratin trapped in hair follicles. They are present from birth and typically resolve on their own within 4–6 weeks without any treatment.
What Neonatal Acne Is
Neonatal acne appears as red papules and pustules, usually on the cheeks, nose, and chin. It typically appears at 2–4 weeks of age. The most accepted theory is that it is caused by maternal androgens still circulating in the baby's system, stimulating sebaceous glands. Another cause may be Malassezia yeast on the skin.
| Feature | Milia | Neonatal Acne |
|---|---|---|
| Appearance | White/yellow cysts, 1–2 mm | Red papules and pustules |
| Timing | Present from birth | Appears at 2–4 weeks |
| Location | Nose, cheeks, forehead | Cheeks, nose, chin |
| Texture | Smooth bumps under skin | Inflamed, pimple-like |
| Resolution | 4–6 weeks | 1–3 months |
How to Care for Baby Skin
- Do not squeeze or pop milia or neonatal acne — this causes scarring
- Wash face gently once daily with plain warm water
- Avoid creams, lotions, or oils on affected areas
- Avoid harsh detergents or scented products on baby's clothes
- Patience is the treatment — both resolve without intervention
What About Erythema Toxicum?
Erythema toxicum neonatorum is a very common rash affecting 50% of term newborns — red splotchy patches with white or yellowish central bumps that come and go over the first few days. It is harmless and resolves in 1–2 weeks without treatment.
See a doctor if
The rash has fluid-filled blisters (vesicles), is spreading rapidly, the baby has a fever, or the bumps look purple or do not blanch when pressed. These suggest infection.
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