“Ridges are a bit like rings in a tree, they’re a marker of things that happened a while ago, a bit like a glacier – it flows forward like a river, but is incredibly slow.” For a nail to ...

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Some people may experience lines running up and down or sideways on their nails; these lines are called ridges. "I sometimes see transverse (side to side) ridges on nails," said Dr. Anthony.

One telltale sign of significant stress or trauma on your nails is the appearance of horizontal ridges, known as Beau’s lines. These lines form when the nail growth process is interrupted ...