Subungual hematoma is the medical term for bleeding and bruising on the fingernail or toenail. The condition is also referred to as runner’s toe, tennis toe, or a blood blister under the nail. Read on ...

A subungual hematoma occurs when an injury breaks open blood vessels under the nail, causing blood to collect and become trapped in one spot. It can affect both fingernails and toenails. If a ...

Dermatology Nursing. 2007;19(1):83-84. Athletes may develop sports-related subungual hematomas. Repeated trauma to the nail bed occurs each time the toe contacts the inside of the sneaker. Eventually ...

If you’ve ever injured your fingernail or toenail, you may have noticed blood pooling under the nail bed’s surface. This bruising is called a subungual hematoma. It’s usually caused by a crushing or ...

Although uncommon, blood clots can form in the finger. They may appear as a small, discolored lump under the skin. A collection of blood can also form under the fingernail, commonly due to injury such ...