Milias are a common non-cancerous skin finding that can be found on people of all ages. A milia can form directly from sloughed-off skin and are small, fluid filled lesions. They can usually be found on the face.
A milia is formed when the skin does not slough off normally, but rather remains trapped in a pocket on the surface of the skin. A single ilium can be formed from a hair follicle or sweat gland. Milia can often develop after injury or blistering of the skin, which disrupts and clogs the tubes leading to the skins surface. They can also develop on sun-damaged skin of the middle-aged and elderly.