Author: Prof. Dr. med. Peter Altmeyer

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Last updated on: 29.10.2020

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A less common term for a dark discoloration of the nail, either flat or in stripes, due to melanin insertion in a subungual melanocytic nevus or melanoma, after local trauma caused by subungual and intraungual bleeding (see below nail hematoma), in thyrotoxicosis, etc.


Last updated on: 29.10.2020