Twenty nail dystrophy in vitiligo.

Twenty nail dystrophy (TND) is a manifestation of several dermatoses and its association with vitiligo is rare. It may be consequent upon a common autoimmune insult to the melanocytes and the nail matrix. We report a patient of acrofacial vitiligo who developed TND. Nail matrix biopsy revealed focal lichenoid reaction and chronic inflammatory infiltrate in the dermal papillae and around blood vessels. Hematological, biochemical and serological investigations showed no evidence of other autoimmune diseases.