Consensus on melanonychia nail plate dermoscopy*

Nilton Di Chiacchio, Débora Cadore de Farias, Bianca Maria Piraccini, Sergio Henrique Hirata, Bertrand Richert, Martin Zaiac, Ralph Daniel, Pier Alessandro Fanti, Josette Andre, Beth S Ruben, Philip Fleckman, Phoebe Rich, Eckart Haneke, Patricia Chang, Judith Dominguez Cherit, Richard Scher, Antonella Tosti

This statement, focused on melanonychia and nail plate dermoscopy, is intended to guide medical professionals working with melanonychia and to assist choosing appropriate management for melanonychia patients. The International Study Group on Melanonychia was founded in 2007 and currently has 30 members, including nail experts and dermatopathologists with special expertise in nails. The need for common definitions of nail plate dermoscopy was addressed during the Second Meeting of this Group held in February 2008. Prior to this meeting and to date (2010) there have been no evidence-based guidelines on the use of dermoscopy in the management of nail pigmentation.