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Clinical study of twenty-nail dystrophy in Korea
Young Bok Lee1, Min Seok Cheon, Hyun Jeong Park
1Department of Dermatology, St Mary's Hospital, College of Medicine, Catholic University of Korea, Seoul, Korea.
Background:
Twenty-nail dystrophy (TND) is an idiopathic and non-congenital nail dystrophy that is characterized by excess longitudinal ridges and loss of luster in multiple nail plates. There are a few studies on TND.
Materials And Methods:
In order to investigate the demographic and clinical characteristics of patients with TND in Korea, a retrospective study was performed. Eighty-eight patients were diagnosed with TND from February 1, 2003, to April 30, 2010.
Results:
In this study, morphology of TND was clinically divided as atrophic, hypertrophic, pitting dominant, shallow fissure-dominant, and deep fissure-dominant types. The patients consisted of 33 males and 55 females. The proportions of subtype and gender predominance showed differences between the child-adolescent-onset TND (20 cases) and the adult-onset TND (68 cases).
Conclusion:
The clinical data of this study contribute to our understanding of TND.
