Milia are tiny white bumps or small cysts on the skin that are almost always seen in newborn babies.
Causes, incidence, and risk factors
Milia occur when dead skin becomes trapped in small pockets at the surface of the skin or mouth. They are common in newborn infants.
Similar cysts are seen in the mouths of newborn infants. They are called
Epstein's pearls. These cysts also go away on their own.
Adults may develop milia on the face. The bumps and cysts also occur on parts of the body that are swollen (inflamed) or injured. Irritation of the skin by rough sheets or clothing may cause mild reddening around the bump, but the middle stays white.
Irritated milia are sometimes incorrectly called "baby acne," although it is not actually a form of acne.