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 it, and when you should call your doctor.

In mild cases, the black toenail will grow out naturally over time without treatment. In severe cases, such as when the nail begins to detach from the nail bed, a person should seek medical treatment.

A black toenail can be a sometimes painful issue that many people experience. It's essential to explore the various causes behind this condition to better understand how to prevent and treat it ...

Toenail discoloration is a common issue. Possible causes of discolored toenails range from minor toe injuries and fungal infections to more severe health conditions, such as melanoma. Toenails are ...

Black toenails are common among serious runners, but you don't have to put up with them. Here's a guide to how to avoid getting black toenails in the first place, and how to deal with them when ...

Nail fungus and discoloration can be caused by multiple factors. ... In this instance, they "may look yellow, brown, black, or even green," Weiss says. These can pop up anywhere on the nail, ...

Other Causes of a Black Toenail If you’re an avid runner or athlete, there’s a good chance your black toenail is runner’s toe. Black toenails can be signs of other diseases, though, so it's ...