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 ...

Trachyonychia, also known as 20-nail dystrophy of childhood or vertical striated sandpaper nails, is characterized by longitudinal ridging of the nails (like a cedar shake roof). Nail surfaces are ...

Results found nail changes in patients with alopecia areata (AA) can occur before, after, or independent of hair loss with the most common nail problems including pitting, ridging, and white spots.