A black toenail, often referred to as a "subungual hematoma," occurs when there is bleeding or bruising underneath the toenail. It typically happens due to trauma or injury to the toe, such as ...

There can be a variety of causes of the dreaded black toenail. A combination of repetitive friction, impact, pressure and swelling of the toes can lead to bruised toenails, explains Simone Paul ...

"Patients say, 'I have dark skin, I don't have to worry about ... Doing a thorough check involves scanning your whole body — including the toenails and bottoms of the feet — and even then ...