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Hair in hypertrichosis is usually longer than expected [7] and may consist of any hair type (lanugo, vellus, or terminal). [18] Patterned forms of hypertrichosis cause hair growth in patterns. Generalized forms of hypertrichosis result in hair growth over the entire body. Circumscribed and localized forms lead to hair growth restricted to a ...
Poliosis circumscripta, commonly referred to as a "white forelock", is a condition characterized by localized patches of white hair due to a reduction or absence of melanin in hair follicles. Although traditionally associated with the scalp, poliosis can affect any hairy area on the body, including eyebrows, eyelashes, and beards.
Uncombable hair syndrome (UHS) is a rare structural anomaly of the hair with a variable degree of effect. It is characterized by hair that is silvery, dry, frizzy, wiry, and impossible to comb. [4] It was first reported in the early 20th century. [5] It typically becomes apparent between the ages of 3 months and 12 years. [6]
It is commonly stated that hair grows about 1 cm per month on average; however reality is more complex, since not all hair grows at once. Scalp hair was reported to grow between 0.6 cm and 3.36 cm per month. The growth rate of scalp hair somewhat depends on age (hair tends to grow more slowly with age), sex, and ethnicity. [3] Thicker hair (>60 ...
Matt James, Steve Kazee and More Dudes Showing Off Their Beards Read article Because while the 32-year-old actor easily could have sat in the hair and makeup trailer day in and day out, he made ...
The Fischer–Saller scale, named after Eugen Fischer and Karl Saller is used in physical anthropology and medicine to determine the shades of hair color. The scale uses the following designations: A (very light blond), B to E (light blond), F to L (), M to O (dark blond), P to T (light brown to brown), U to Y (dark brown to black) and Roman numerals I to IV and V to VI (red-blond).
Grey or white hair is not caused by a true grey or white pigment, but is due to a lack of pigmentation and melanin. The clear hairs appear as grey or white because of the way light is reflected from the hairs. The change in hair colour occurs when melanin ceases to be produced in the hair root and new hairs grow in without pigment.
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