Known as baby acne, milia are small white bumps or cysts that appear on the skin. This condition most commonly affects newborn babies, although it can occur at any age. Milia are usually seen on the nose, chin or cheeks of a newborn. If milia appears on the inside of a newborn's mouth they are called Epstein's pearls.
No special tests are required to diagnose milia; this condition can be diagnosed by simply looking at your baby's skin. Milia occur as a result of dead skin becoming trapped in pockets of skin at the skin's surface. Milia usually disappear within a few weeks, requiring no treatment whatsoever.