Not all marks on your nails are cause for alarm. "A black line that extends longitudinally from the cuticle to the free edge of the nail is often pigment," board-certified dermatologist Joshua ...

Racial melanonychia is an increase of melanocytes within the nail matrix that can cause black lines on the nails. Melanocytes ...

A person should not ignore changes to their nails, especially if they are painful, bleeding, and occur without explanation. This article discusses the cause of black lines on the nail. It also ...

Having a dark line on your fingernails or toenails is called melanonychia. The lines are brown or black and usually look like a stripe that begins at the bottom of your nail bed and continues to ...

Beau’s lines are ridges that develop across the nails. They happen when nail growth ... Another kind of line, which can be black or brown, is known as melanonychia. This condition may be the ...

While a brown or black band of pigment in one or more ... See bands of yellow streaks on your fingernails? This could be a rare tumor of the nail matrix which can be surgically removed, Feely ...

These black lines on fingernails may look like bruising or internal coloring - not like you just accidentally created an edgy ...