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

A black line on your nail (medically known as melanonychia) causes a streak of dark pigmentation that runs along the nail bed. It can be a normal color variation, especially in people with darker ...

Repeated trauma to the nail bed occurs each time the toe contacts ... In contrast, a chronic or older lesion appears as a dark blue, purple, or black nail plate discoloration and is usually ...