What is subungual melanoma?

If you're a runner you may be wondering what in the world something like "subungual melanoma" has to do with running injuries.  There are a couple of reasons.  Subungual melanoma is commonly mistaken for a bruised toenail. What runner has never had a dark spot under the toenail? Subungual melanoma is actually extremely deadly. You're not necessarily likely to get it, but there is a reason that this might be pertinent to you as a runner. Repeated trauma from running and beating up your toes could possibly increase your odds of getting this form of cancer. What is subungual melanoma?  Well, that's what we're talking about today on the Doc On The Run Podcast.