Medically reviewed by Susan Bard, MD Key Takeaways Beau's lines are horizontal ridges across nails caused by interrupted nail ...

Maybe you first noticed them while you were painting your nails and the polish didn’t go on smoothly — those dents that run from one side of the nail to the other and create little valleys where the ...

Our fingernails are our version of animals’ claws, made from the same substance – keratin – as our hair, and the hooves and horns of vertebrates. They grow twice as fast as our toenails, faster in men ...

"A lot of times we'll learn in training that the nails can be a window into your health because they can sometimes be an indicator of some underlying medical problems," noted NBC News medical ...

Habit-tic deformity is a traumatic nail dystrophy that results from habitual picking of the proximal nail fold margin. 4 The most common location is the thumbnail; however, all fingernails can be ...

Longitudinal ridging on fingernails or toenails, also known as vertical ridges, are slender raised lines that run from the base of the nail to its tip. Often appearing as faint vertical stripes, these ...