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Both the eyes and legs are still of the normal colour. Leucism ( / ˈluːsɪzəm, - kɪz -/) [2] [3] [4] is a wide variety of conditions that result in partial loss of pigmentation in an animal —causing white, pale, or patchy coloration of the skin, hair, feathers, scales, or cuticles, but not the eyes. [4] It is occasionally spelled leukism.
Vitiligo (/ ˌ v ɪ t ɪ ˈ l aɪ ɡ oʊ /) is a chronic autoimmune disorder that causes patches of skin to lose pigment or color. The cause of vitiligo is unknown, but it may be related to immune system changes, genetic factors, stress, or sun exposure. Treatment options include topical medications, light therapy, surgery and cosmetics.
Poliosis. Depigmentation of sections of skin and hair in 48-year-old man with vitiligo and poliosis. Poliosis (also called poliosis circumscripta) is the decrease or absence of melanin (or colour) in head hair, eyebrows, eyelashes, or any other hirsute area. It is popularly known as white forelock when it affects hair directly above the forehead.
A variety of human hair colors; from top left, clockwise: black, brown, blonde, white, red. Human hair color is the pigmentation of human hair follicles and shafts due to two types of melanin: eumelanin and pheomelanin. Generally, the more melanin present, the darker the hair. Its tone depends on the ratio of black or brown eumelanin to yellow ...
Gray or white hair occurs from a loss of melanin, the pigment which gives the hair color. Melanin is produced by the hair follicles, the structures in the skin which hair grows from, per the NIH ...
Pigmentation disorders are disturbances of human skin color. [1] There may be a loss or reduction, which may be related to loss of melanocytes or the inability of melanocytes to produce melanin or transport melanosomes correctly. [1] Most pigmentation disorders involve the underproduction or overproduction of melanin. [2] [3]
Human skin color. Extended Coloured ( Afrikaans: Kleurlinge or Bruinmense) family from South Africa showing some spectrum of human skin coloration. Human skin color ranges from the darkest brown to the lightest hues. Differences in skin color among individuals is caused by variation in pigmentation, which is the result of genetics (inherited ...
Depigmentation. Depigmentation is the lightening of the skin or loss of pigment. Depigmentation of the skin can be caused by a number of local and systemic conditions. 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 ).