Pigmentation Comes In All Shapes And Shades
This is a rare, inherited disorder. It reduces the amount of melanin pigment in the skin, hair, and eyes. People with albinism (albinos) have white hair, pale skin, and blue eyes. Their eyes may seem red in different lighting conditions. Many also have vision problems.
Dark brown to gray-brown, symmetric patches of pigment on the face. During pregnancy, this is called the mask of pregnancy. Sun exposure, hormones, and birth control pills are thought to cause melasma.
Pigment loss after skin damage
Sometimes, after an ulcer, blister, burn, or infection, the skin does not replace some of the pigment in that area.
This causes smooth, white patches on the skin. It is caused by the loss of pigment-producing cells in the skin (melanocytes). It is thought to be an autoimmune disease. The white patches are very sensitive to the sun.