Melanonychia

Melanonychia
SpecialtyDermatology

Melanonychia is a black or brown pigmentation of a nail, and may be present as a normal finding on many digits in Afro-Caribbeans, as a result of trauma, systemic disease, or medications, or as a postinflammatory event from such localized events as lichen planus or fixed drug eruption.: 790 : 665 

There are two types, longitudinal and transverse melanonychia.: 671 

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