You peel off your running sock and – alas! – there it is: your first bruised toenail. Many runners view bruised toenails as a right of passage, but you are no less of a runner if you never get one. In ...

When Maria Delgado noticed a dark streak under her big toenail, she assumed it was from dropping her gym bag on her foot. Six months later, that seemingly innocent mark led to a diagnosis that saved ...

Trauma or injury commonly causes a black toenail due to bleeding under the nail. Repetitive sports activities can lead to runner's toe, causing the toenail to turn black. Malignant melanoma, a serious ...

Toenail problems extend beyond mere cosmetic nuisances, often acting as potential indicators of broader health concerns or stemming from a variety of factors. Among these concerns, the occasional ...

As unsightly as it is, the infection is usually manageable — but only with the right treatment. Here’s how to kick it. Credit...Joyce Lee for The New York Times Supported by By Caroline Hopkins Q: It ...