Median canaliform nail dystrophy involving thumb nails and great toe nails: a rare entity

Median canaliform dystrophy of Heller is a rare entity characterized by median or midline split of nails in one or both thumb nails. Treatment of median canaliform dystrophy is at times challenging as no successful therapy is available till date. Recently reported treatments include topical steroids, calcineurin inhibitor tacrolimus 0.1%, and tazarotene 0.05% ointment. We report the case of a 30-year-old man who came to our institute with complaints of nail lesions over both thumb nails and great toe nails from the past 5 years, which was causing cosmetic disfigurement.