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 ...

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 ...

Longitudinal ridges on one or two nails can be due to trauma to the nail plate. However, this is unlikely to be the cause if all your nails are affected! It's also very unlikely to be due to a ...

Longitudinal ridging refers to the vertical raised lines present on the nails. Along with the ridging, the nails may also be discolored and thickened. A certain number of lines are typically found on ...