what causes ridges in fingernails vertically
Vaertical Ridges. Many nail blemishes produce the appearance of vertical ridges on the nails; however true vertical ridges on the nails are harmless. According to the Mayo Clinic, vertical ridges may result from injury to the nail bed or plate and can become more apparent with age, as can white spots and lines.
via Pixabay. Vertical nail ridges, which extend from your cuticle to the tip of your nail, are fairly common and often become more numerous or prominent as you age. Vertical ridges in your nails are not a health concern. Although the exact cause of such ridging isn't known, heredity likely plays a role.