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To some extent, skin color is determined independently of eye and hair color, as can be seen from variation in skin coloration in human populations. For the evolution of human skin color, see section above. [37] [52] [53] [47] [54] [55] For skin color, heritability is very high, even though it can be modified by exposure to sunlight.
Leucism (/ ˈ l uː s ɪ z əm,-k ɪ z-/) [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.
It causes skin cells to grow rapidly and build up on the skin, causing itchy, scaly patches of thick, red skin. ... Many autoimmune diseases can cause hair loss, including alopecia areata, lupus ...
Albinism is a genetic abnormality in which little or no pigment is found in human hair, eyes, and skin. The hair is often white or pale blond. However, it can be red, darker blond, light brown, or rarely, even dark brown. Vitiligo is a patchy loss of hair and skin color that may occur as the result of an auto-immune disease.
Female pattern hair loss . Also known as androgenetic alopecia, female pattern hair loss (FPHL) will affect a whopping 40 percent of women by age 50, according to research. “This is a chronic ...
Causes of Hair Loss. As you can guess, each type of hair loss has its own causes. Broadly speaking, the different types of hair loss can be broken down into two categories: non-scarring alopecia ...
Height, body weight, skin tone, body hair, sexual organs, hair color, hair texture, eye color, eye shape (see epicanthic fold and eyelid variations), nose shape (see nasal bridge), ear shape (see earlobes), body shape; Body and skin variations such as amputations, scars, burns and wounds.
Female pattern hair loss (FPHL). This is also called female pattern baldness, androgenetic alopecia, or androgenic alopecia (AGA). It’s the most common cause of hair loss in women. FPHL usually ...
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