Several different medical conditions or injuries can create problems with your toenails, and most of them can be treated. Learn about the causes of these problems, as well as what steps you can ...

Nail changes are rarely the first sign of illness. Other symptoms almost always appear before that happens. For instance, emphysema causes breathing problems much earlier than it does clubbed nails.

The patient didn't have any typical risk factors for toenail problems — such as an injury to the nails, or a family history of nail disorders — but she did report that she had a fish pedicure ...

A 40-year-old woman’s weird toenail mark was dismissed initially by the doctors as a fungal infection and was later diagnosed as a deadly melanoma cancer. Laura Jennings had to endure three ...

Harvard has collected toenail clippings from more than 100,000 people in the name of science. Researchers can use the clippings to measure levels of arsenic and selenium in a person's body over ...