Ridges in nails can develop due to a current or past illness or injury. A healthy nail is typically smooth or has barely perceptible vertical lines running from the cuticle to the tip. When there are ...

Have you ever taken off your nail polish only to notice a dark line on the nail running vertically down your finger? These ...

To find out if yellow nails are due to a deficiency, you'll need a blood test to check nutrient levels. Once a deficiency is ...