In their protective role, nails bear the brunt of daily activities. Walking, running, wearing shoes or participating in sports are just a few of the stresses and strains feet must endure. All or a portion of the nail plate can be damaged when the feet are injured or abused.

Nail problems are commonly caused by improper trimming, minor injuries or repeated trauma. Some nail disorders can also be congenital. Proper trimming (along the contour) on a regular basis can help keep the toenails in the pink, as can wearing well-fitted, low to moderately heeled shoes.