Brown or black PYGMENTATION of the HYPONYCHIUM or the other nail folds is better known as 'Hutchinson's sign'.
A YELLOW HYPONYCHIUM might be an early stage of fungal infection, and can develop as Onychomycosis in the nail plate.
The most common direct cause is fungal infection, and the feature is sometimes a feature of psoriasis.
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THE NAIL UNIT
The eight basic components of the nail unit include: 1 - proximal nail fold;
2 - cuticle; 3 - lunula; 4 - nail plate;
5 - lateral nail folds; 6 - nail bed;
7 - hyponychium; 8 - free edge.
* NOTICE: The HandResearch Nail Tutor Tool
is still in development
- currently this tool discriminates 57 fingernail disorders in the nails.
The NAIL TUTOR tool is an aspect of Medical Hand Analysis
& Multi-Perspective Hand Reading
. The purpose of this tool is to help you identify the nature of your fingernail disorder. The section fingernail disorders
presents a more comprehensive overview of the most common fingernail abnormalities.
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