Medically reviewed by Susan Bard, MD A black line on the nail could be normal, such as when it is just a color variation.

This decadeslong pastime in Black communities has been celebrated everywhere from weddings to family reunions to impromptu ...

At the Haskell Free Library & Opera House there is a distinct black line that separates countries and families. The line is a wide black tape running diagonally across the floor of the library ...

A black line on your nail (medically known as melanonychia) causes a streak of dark pigmentation that runs along the nail bed ...