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 skin ...

Nail infections represent one of the most underestimated health challenges facing Americans today, with medical professionals reporting that roughly 10% of the population battles this stubborn ...

Here are some signs that it may be time to give your nails a break. Credit...Eric Helgas for The New York Times Supported by By Erica Sweeney Q: I keep my nails near-constantly polished, but I worry ...