Open AccessMedian nail dystrophy involving the thumb nail
Author(s) -
Rahulkrishna S Kota,
Abhishek P Pilani,
Pragya A Nair
Publication year - 2016
Publication title -
indian journal of dermatology/indian journal of dermatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.395
H-Index - 36
eISSN - 1998-3611
pISSN - 0019-5154
DOI - 10.4103/0019-5154.174092
Subject(s) - medicine , nail matrix , tazarotene , dystrophy , nail (fastener) , nail plate , dermatology , thumb , onycholysis , surgery , pathology , paronychia , psoriasis , materials science , metallurgy
Median canaliform dystrophy of Heller is a rare entity characterized by a midline or a paramedian ridge or split and canal formation in nail plate of one or both the thumb nails. It is an acquired condition resulting from a temporary defect in the matrix that interferes with nail formation. Habitual picking of the nail base may be responsible for some cases. Histopathology classically shows parakeratosis, accumulation of melanin within and between the nail bed keratinocytes. Treatment of median nail dystrophy includes injectable triamcinalone acetonide, topical 0.1% tacrolimus, and tazarotene 0.05%, which is many a times challenging for a dermatologist. Psychiatric opinion should be taken when associated with the depressive, obsessive-compulsive, or impulse-control disorder. We report a case of 19-year-old male diagnosed as median nail dystrophy