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Onychomadesis is a periodic idiopathic shedding of the nails beginning at the proximal end, possibly caused by the temporary arrest of the function of the nail matrix.〔James, William; Berger, Timothy; Elston, Dirk (2005). ''Andrews' Diseases of the Skin: Clinical Dermatology''. (10th ed.). Saunders. ISBN 0-7216-2921-0.〕〔Freedberg, et al. (2003). ''Fitzpatrick's Dermatology in General Medicine''. (6th ed.). McGraw-Hill. ISBN 0-07-138076-0.〕 One cause in children is hand foot and mouth disease.〔Bernier et al. Nail matrix arrest in the course of hand, foot and mouth disease. ''European Journal of Pediatrics''. 2001-11-01. http://www.springerlink.com/content/724986cp5hudgupd/〕 This generally resolves without complication. Onchyomadesis can also occur if the nail is damaged or suffers a loss of blood supply, i.e. due to a bruise. The nailbed turns black, and the nail drops off shortly afterwards. It takes around 6 to 12 months to regrow. == See also == * Patterned acquired hypertrichosis * List of cutaneous conditions 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「Onychomadesis」の詳細全文を読む スポンサード リンク
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