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Nevus depigmentosus is a loss of pigment in the skin which can be easily differentiated from vitiligo. Although age factor has not much involvement in the nevus depigmentosus but in about 19% of the cases these are noted at birth. Their size may however grow in proportion to growth of the body.
The pigment loss can be partial (injury to the skin) or complete (caused by vitiligo). It can be temporary (from tinea versicolor) or permanent (from albinism). [1] Most commonly, depigmentation of the skin is linked to people born with vitiligo, which produces differing areas of light and dark skin. Monobenzone also causes skin depigmentation.
Postinflammatory hypopigmentation is a highly prevalent pigmentary disease. It can happen to any type of skin. Nonetheless, individuals with darker skin seem to have it more frequently and visibly, perhaps due to the color contrast with their natural skin. The incidence of postinflammatory hypopigmentation is the same for both sexes. [2]
In short, melasma is a chronic skin condition that appears as darkened areas on the face due to an overproduction of melanin, says Gina Charles, MO, a family physician specializing in skincare. It ...
Vitiligo (/ ˌ v ɪ t ɪ ˈ l aɪ ɡ oʊ /, vit-il-eye-goh) is a chronic autoimmune disorder that causes patches of skin to lose pigment or color. [1] The cause of vitiligo is unknown, but it may be related to immune system changes, genetic factors, stress, or sun exposure. [5] [6] Treatment options include topical medications, light therapy ...
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Genetics, sun exposure, and some drugs are the three main factors that contribute to skin pigmentation. [4] The most frequent cause of low melanin concentration (hypopigmentation) is prior skin trauma, which includes skin lesions including blisters, burns, infections, exposure to chemicals, and other wounds. The skin will appear paler than the ...
Some common genetic causes include mutations in the tyrosinase gene or OCA2 gene. [3] [4] As melanin pigments tend to be in the skin, eye, and hair, these are the commonly affected areas in those with hypopigmentation. [2] Hypopigmentation is common and approximately one in twenty have at least one hypopigmented macule.