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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.
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 ...
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.
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 ]
Pili annulati (also known as "ringed hair") [1] is a genetic trait in which the hair seems 'banded' by alternating segments of light and dark color when seen in reflected light. [1] [2]: 767 [3]: 640 [4] Pili annulati manifests during infancy or at birth. The clinical manifestation varies. Usually, the hair appears shiny and banded.
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]
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 .
Monilethrix (also referred to as beaded hair) [1] is a rare autosomal dominant hair disease that results in short, fragile, broken hair that appears beaded. [2] [3] It comes from the Latin word for necklace (monile) and the Greek word for hair (thrix). [4] Hair becomes brittle, and breaks off at the thinner parts between the beads.