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

Have you ever taken off your nail polish only to notice a dark line on the nail running vertically down your finger? These ...

Your nails can tell you much more than whether you need a manicure. They’re packed with details about your health. They can show if you have an infection, a serious disease, or even how well you ...

Learn the most common causes of white spots on nails, a condition known as leukonychia. Plus, experts explain how to treat ...