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Alopecia Androgenetica (also known as androgenetic alopecia or androgenic alopecia) is a common form of hair decline in both female and male humans. In male humans in especial this condition is also commonly known as male pattern baldness. Hair is lost in a well defined pattern part above both temples. Hair also thins at the wreath of the head. Often a rim of hair around the sides and rear of the head is left or the condition may progress to complete baldness. The exemplar of hair loss in women differs from male exemplar baldness. In women the hair becomes thinner all over the head and the hair line does not recede. Androgenic alopecia in women rarely leads to sum baldness. A diverseness of genetic and environmental factors likely play a role in causing androgenic alopecia. Although researchers are studying the factors that may contribute to this condition most of these persist unknown. Researchers have resolute that this form of hair loss is related to hormones called androgens particularly an androgen called dihydrotestosterone (DHT). Androgens are authoritative for normal male sexual development before birth and during puberty. Androgens also have other important functions in both males and females such as regulating hair growth and sex mechanism. Male pattern baldness is caused by a genetic predisposition of hair follicles to DHT which causes them to shrink when exposed to it. This shortens their lifespan and prevents them from producing hair normally.
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