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What age group has Beau lines?

While often associated with age-related changes, Beau lines are not exclusive to any single demographic and can appear in individuals across all age groups, from infants to older adults. These transverse depressions in the nail plate signal a temporary interruption in nail growth, typically triggered by a significant physiological stressor. Understanding the various causes is crucial for recognizing these lines as a potential indicator of a past or current health issue.