toe, jogger's toe, tennis toe)
Also known as
runner's toe, joggers toe or tennis toe, black toenails
are a common injury seen in athletes such as
joggers (especially long distance or downhill
runners), skiers, tennis players etc., that is
characterised by blackened toenails, and the
possible loss of the affected nail. It is the
result of bruising or slight bleeding under the
nail caused by the repetitive trauma of the toe
jutting forward or the nail hitting the top of
the shoe. It is more common in the warmer months
due to feet swelling in the heat.
of black toenails include injury (from dropping
something on it) or tight/poorly fitting
Symptoms of black toenail:
toenail, usually affecting the first or second
toes. This may or may not be painful.
Over time the
nail may fall off.
Treatment of black toenail:
Most cases of
black toenail require no treatment. If pain is
severe it may be relieved by your doctor by
piercing a hole in the nail.
toenail grows, the damaged part may separate
from the nail bed & eventually fall out. Over
time, this will be replaced with new/undamaged
If you notice
any redness or infection, see your doctor.
Preventing black toenails:
fitting shoes. They should be 1 inch of space
between the end of the toe & the front of the
Take a a
break from exercising, or do a different form of
exercise while the toe heals.
Other causes of black toenails: