PMID: 9167348Nov 1, 1996Paper

Congenital onychodysplasia of the index fingers--Iso-Kikuchi syndrome. A case involving the second toenail

Clinical and Experimental Dermatology
S H YounJ H Chung

Abstract

We report a case of congenital onychodysplasia of the index fingers (Iso-Kikuchi syndrome) in a 2-year-old boy who had nail deformities on both index fingers and the left second toe. He had a micronychia of the left index fingernail, malalignment and abnormal lunula of the right index fingernail and micronychia and malalignment of the left second toenail. Congenital onychodysplasia of the index fingers (COIF) is a rare condition characterized by various forms of nail dysplasia commonly involving the index fingers, but not infrequently also the neighbouring fingers such as the middle fingers and thumbs. The five criteria characterizing COIF include the following: (i) congenital occurrence; (ii) unilateral or bilateral index finger involvement; (iii) variability in nail appearance; (iv)possible hereditary involvement; and (v) frequently associated bone abnormalities. The nails of COIF include the full spectrum of nail dysplasia, from an irregular lunula, malalignment, micronychia (hypoplastic and rudimental), polyonychia (split rudimental), and anonychia, specifically affecting the index fingers. Our patient represents various forms of nail dysplasia of the both index fingers and left second toe such as micronychia, malalignment ...Continue Reading

References

Aug 1, 1991·Pediatric Clinics of North America·A S PappertJ L Cohen
Sep 1, 1990·The Journal of Hand Surgery·T Miura, R Nakamura
Jun 1, 1985·The Journal of Dermatology·I KikuchiN Kawana
Nov 1, 1974·Archives of Dermatology·I KikuchiF Amano
Feb 1, 1984·Archives of Dermatology·R Baran, J D Stroud
Jan 1, 1983·Archives of Dermatology·Y Kitayama, S Tsukada
Jul 1, 1982·Journal of the American Academy of Dermatology·A J Millman, R P Strier

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Citations

May 2, 2002·The Australasian Journal of Dermatology·Jenny NicolopoulosAnne Howard
Jun 26, 2008·Pediatric Dermatology·Nuria MartiEsperanza Jorda
Apr 12, 2001·The British Journal of Dermatology·S C MurrayN Khumalo

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