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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.
raven black; Naturally, hair reflects light, which is why even black hair does not appear fully dark in the light. However, the darkest shade of black hair, raven-black, does not behave as other hair would in the light. The name of the color comes from a raven’s wing due to similarities in behavior.
Patients who shave the affected area only once will generally experience a recurrence of the infection, since, the bacteria begin to develop the concretions once again as the hair grows back. [ 2 ] Corynebacterium infections are related to excessive sweating ; for this reason, deodorants containing an aluminum chloride solution may be used for ...
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).
The light is absorbed by melanin in the hair which heats and damages the hair follicles to remove it. Laser hair removal has found to delay hair regrowth by up to 3 months. [ 28 ] Laser hair removal can cause redness, edema , first to second degree burns, skin damage, and pigmentation. [ 26 ]
Hypertrichosis (better known as Werewolf Syndrome) is an abnormal amount of hair growth over the body. [1] [2] The two distinct types of hypertrichosis are generalized hypertrichosis, which occurs over the entire body, and localized hypertrichosis, which is restricted to a certain area. [1]
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]
Ear hair is the terminal hair arising from folliculary cartilage inside the external auditory meatus in humans. [1] In its broader sense, ear hair may also include the fine vellus hair covering much of the ear, particularly at the prominent parts of the anterior ear, or even the abnormal hair growth as seen in hypertrichosis and hirsutism .