From trauma to a toenail fungus, there are many reasons why you may have a black toenail. Here's what it means, how to treat ...

Repeated trauma to the nail bed occurs each time the toe contacts the inside of the sneaker. Eventually there is bleeding beneath the nail plate. Since the nail stays in place, blood collects ...

is when the nail becomes injured from trauma (such as dropping a heavier object on your toe), causing blood to collect under ...