Medically reviewed by Casey Gallagher, MD Ridges in nails can develop due to a current or past illness or injury. A healthy ...

As people age, vertical nail ridges, known as onychorrhexis, can form due to nutritional deficiencies, anemia, digestive disorders, dehydration, and some fatal diseases. Effective treatments include ...

Horizontal ridges in your nails are called Beau's lines. This is a separate condition from onychorrhexis. These ridges are usually deeper than vertical ridges. While onychorrhexis is more likely ...

Nails can say a lot about your overall ... 5. Horizontal or Vertical Ridges Some people may have lines running up and down or sideways on their nail, or ridges. Ridges are typically the result ...

You may have splinter hemorrhages if you have dark, vertical lines under your nails that look like splinters. The most common cause is trauma to the nail. Splinter hemorrhages can also happen due ...