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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Male-pattern hair loss ： ウィキペディア英語版 Male-pattern hair loss Male-pattern hair loss, also known as androgenic alopecia and male pattern baldness (MPB), is hair loss that occurs due to an underlying susceptibility of hair follicles to androgenic miniaturization. It is the most common cause of hair loss and will affect up to 70% of men and 40% of women at some point in their lifetimes. Men typically present with hairline recession at the temples and vertex balding, while women normally thin diffusely over the top of their scalps. Both genetic and environmental factors play a role, and many etiologies remain unknown. Classic androgenic hair loss in males begins above the temples and vertex, or calvaria, of the scalp. As it progresses, a rim of hair at the sides and rear of the head remains. This has been referred to as a 'Hippocratic wreath', and rarely progresses to complete baldness. The Hamilton-Norwood scale has been developed to grade androgenic alopecia in males. Female androgenic alopecia is known colloquially as "female pattern baldness", although its characteristics can also occur in males. It more often causes diffuse thinning without hairline recession; and, like its male counterpart, rarely leads to total hair loss. The Ludwig scale grades severity of androgenic alopecia in females. Animal models of androgenic alopecia occur naturally and have been developed in transgenic mice; chimpanzees (''Pan troglodytes''); bald uakaris (''Cacajao rubicundus''); and stump-tailed macaques (''Macaca speciosa'' and ''M. arctoides''). Of these, macaques have demonstrated the greatest incidence and most prominent degrees of hair loss. ==Effects== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Male-pattern hair loss」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.