Eventually there is bleeding beneath the nail plate. Since the nail stays in place, blood collects beneath it and a hematoma forms. The increased pressure beneath the nail plate results in ...

Black discoloration of the nail can also be caused by dried blood due to some type of trauma - also known as a subungual hematoma - so if you're not sure what could have caused a black mark on ...

Specific treatment plans vary based on the type of hematoma, its severity, and underlying health conditions. Minor ...