Depending on their exact appearance, these could represent different nail changes.

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One possibility is a Beau’s line, which is a transverse groove or depression that develops when nail growth is temporarily interrupted.

Another possibility is a type of white nail band known as leukonychia, although the exact appearance and cause matter.

These conditions can look similar in photographs, which is why an image alone cannot reliably identify the cause.

What Are Beau’s Lines?

Beau’s lines are horizontal depressions that extend across the nail.

They occur when nail

Your Nails Could Be Sending Warning Signs — Especially After 40