From newborn to older adult, acne can break out at any age. And while it's most common in adolescence and early adulthood, ...

Newborns can sometimes develop a scaly scalp ... doesn't itch and usually disappears within a few weeks or months without treatment. Baby acne usually appears about four weeks after birth.

Acne affects about 20% of newborns ... but usually clear with at-home treatment. However, a parent or caregiver should seek medical attention if the baby has other symptoms, such as a fever ...