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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 Russell's sign ： ウィキペディア英語版 Russell's sign Russell's sign, named after British psychiatrist Gerald Russell, is a sign defined as calluses on the knuckles or back of the hand due to repeated self-induced vomiting over long periods of time. The condition generally arises from the afflicted's knuckles making contact with the incisor teeth during the act of inducing the gag reflex at the back of the throat with their finger(s). This type of scarring is considered one of the physical indicators of a mental illness, and Russell's sign is primarily found in patients with an eating disorder such as bulimia nervosa or anorexia nervosa. However, it is not always a reliable indicator of an eating disorder. Bulimics who are capable of "handsfree purging", or the induction of vomiting by the willful opening of the esophageal sphincter in a manner similar to belching, while contracting the stomach muscles, do not have Russell's sign. Martial art practices include push-up exercises during with hands in fists. The support points are the big knuckles of the index and middle finger. Regular exercise result in callouses and hardened skin. ==References== 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「Russell's sign」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.