be nothing to worry about—but if it is new, changing, or accompanied by other symptoms, it’s worth finding out why.
a serious health problem.
Vertical ridges that develop gradually are often associated with normal aging, while horizontal grooves may sometimes reflect a temporary interruption in nail growth.
However, the appearance
of a new, changing, or unusual line—particularly a dark streak on a single nail—deserves closer attention.
Your nails cannot diagnose your health on their own, but they can sometimes provide useful clues. The best approach is to observe changes, avoid
