Milia en plaque is very rare with less than 20 case reports in the world literature. Multiple eruptive milia also are rare, but still more common than milia en plaque. No racial variations in incidence exist. Eruptive milia and milia en plaque occur more frequently in women. Primary milia in newborn infants are so common that they can be considered normal.
Milia are asymptomatic lesions commonly seen in on the face of newborn infants.
In children and adults, they usually arise around the eye. Eruptive milia, as the name suggests, have a rapid onset, often within a few weeks. Milia are superficial, uniform, pearly-white to yellowish, domed lesions between 1 and 2 mm in diameter. They often are grouped. In milia en plaque, the small papules arise on an erythematous plaque.