Runners often get dark discoloration in the toenails. That discoloring can happen after long runs, trail runs, wearing ill-fitting running shoes or trauma.
The question is whether or not the dark brown, blue or black area in the toenail is just a bruise or something more ominous.
If you get a bruise under the toenail, it will gradually get better.
If you get toenail fungus, it will gradually get worse.
Today on the Doc On the Run podcast we’re talking about how a runner can tell a bruise under the toenail from toenail fungus.
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