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Published on: 8/20/2026
Nail ridges are small raised or indented lines that run vertically or horizontally across the fingernails. Vertical ridges are typically a harmless sign of aging, while horizontal ridges (called Beau's lines) may signal an underlying health issue such as nutritional deficiency, thyroid disease, diabetes, or a recent illness. Deep ridges, discoloration, or changes in nail texture warrant medical attention.
Because nail changes can point to a wide range of conditions—from minor to serious—the smartest next step is to identify what's actually causing them. Take a free, instant, online symptom check to get personalized insights based on your specific symptoms and clear guidance on what to do next.
Reviewed for medical accuracy: 07/15/2026
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Ridges on fingernails are common and can develop as a normal part of aging. However, certain types of ridges may indicate health problems.
If you notice concerning changes in your nails, you can use Ubie's free AI-powered symptom checker to help identify potential causes and determine whether you should consult a healthcare provider for further evaluation.
(References)
Braswell MA, Daniel CR 3rd, & Brodell RT. (2015). Beau lines, onychomadesis, and retronychia: A unifying .... Journal of the American Academy of Dermatology, 26475537.
Fawcett RS, Linford S, & Stulberg DL. (2004). Nail abnormalities: clues to systemic disease. American family physician, 15053406.
Cutolo M, Cimmino MA, & Accardo S. (1990). Nail involvement in osteoarthritis. Clinical rheumatology, 2390855.
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