Faint lines on your fingernail could indicate a rare genetic condition that puts you at risk of kidney, skin, and eye cancers, new research suggests. Scientists at the National Institutes of ...

In addition to primarily white toenails, you might notice whitish grooves and double lines on your toenails. Chronic iron deficiency can lead to other nail symptoms, like a condition called ...

Image Credit: Nadya So / Shutterstock Nearly 50% of true leukonychia cases arise due to fungal infections, which present as dense, uneven, and white or yellow longitudinal lines on the nail plate.