From the mysterious white flecks that sometimes appear on nails to unusual ridging or changes in thickness, what do these ...

The nail should not be broken or cracked. The color underneath the nail (nail bed ... reddened, swollen, and painful. It is more common in people who suck or bite their fingers, but it can ...

A doctor has issued a serious warning to anyone who bites their nails after one woman contracted a ‘deadly infection’.