black toenail
Subungual hematoma result
Black toenail is a toenail that has turned dark from blood pooling beneath it, typically caused by repeated trauma or a single hard impact.
Runners and hikers commonly develop black toenails from shoes that allow the toe to bang against the front: I lost two black toenails training for the marathon.
The nail often falls off eventually and regrows.
- bruiseDiscolored tissue injury
- fungusSpore-bearing organism
- injuryPhysical or psychological harm
- runnerOne who sprints
- marathonLong-distance footrace
long distance running · hit the wall · discoloration · big toe · foot · trauma · blister · blood blister · shoe · tight · purple · blood · hematoma · painful · throbbing · podiatrist · falling · detached
- digit ailmentsbroken toe, hammer toe, hammertoe, bunion, claw toe
- Sports Injuriesmuscle strain, tendonitis, ligament sprain, hamstring strain, stress fracture