When Maria Delgado noticed a dark streak under her big toenail, she assumed it was from dropping her gym bag on her foot. Six months later, that seemingly innocent mark led to a diagnosis that saved ...

Nail changes may offer clues to hidden health problems, including melanoma, iron deficiency, lung disease, endocarditis and ...

Anemia may cause nail irregularities alongside other symptoms. Signs of anemia nails include pale nail beds and spoon-shaped nails. Red blood cells are responsible for carrying oxygen around the body.

Dear Doctor K: I hurt my toe and now the nail has turned black. What can I do? Dear Reader: Ouch - I've been there. A couple of years ago I was outdoors and turned around to walk in the opposite ...