Ridges in nails aren't all about the skin—they can ... Sometimes, though, they point to a skin disease like eczema, psoriasis, or chronic paronychia (an infection of the nail folds that makes ...

Nail ridges are grooves or raised lines that form on the nail plate and may run horizontally or vertically. They can vary in severity, from barely noticeable to quite pronounced. While some ridges ...

However, chronic nail biting or picking can cause scarring that leads to permanent ridges. Chronic inflammatory skin ...