From trauma to a toenail fungus, there are many reasons why you may have a black toenail. Here's what it means, how to treat ...

Michelle Tagliamonte, 58, was getting a manicure when she noticed the black lines on her thumb, which signaled the start of a fast-spreading cancer.

As with other skin cancers, early diagnosis of subungual melanoma is crucial. See your doctor right away if you happen to ...