If you have noticed lines that appear like grooves or indentations running horizontally across your fingernails or toenails, you may be wondering what's going on. These are known as "Beau's lines." ...

The cause of your nails changing texture or shape may not always be a cause for concern.  Fingernails and toenails often ...

In TODAY.com's Expert Tip of the Day, a dermatologist shares an often overlooked nail symptom that can be a sign of a serious ...

Your fingernails might seem like simple protective coverings for your fingertips, but they’re actually sophisticated diagnostic tools that can reveal crucial information about your protein intake.

You notice it first as a small gap between your nail and the pink skin underneath. What starts as a barely visible separation gradually expands, creating an unsettling space where debris collects and ...

The nail condition koilonychia produces spoon-shaped nails, because iron deficiency causes anemia. The growth of nail cells ...