Merck Manual

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Hutchinson Sign
Hutchinson Sign
Hutchinson Sign

In this photo, the middle finger is marked by lengthwise discoloration of the nail (melanonychia striata; blue arrow) and hyperpigmentation that extends across the half-moon at the base of the nail (lunula) to the cuticle (Hutchinson sign; red arrow).

Image courtesy of Carl Washington, MD, and Mona Saraiya, MD, MPH, via the Public Health Image Library of the Centers for Disease Control and Prevention.

In these topics
Tumors of the Nails