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Published on: 8/20/2026

When should I be concerned about ridges on my fingernails?

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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Concerned about your symptoms?

Explanation

Ridges on fingernails are common and can develop as a normal part of aging. However, certain types of ridges may indicate health problems.

Types of Ridges:

  1. Vertical Ridges: These are usually harmless and often become more prominent with age.
  2. Horizontal Ridges (Beau's Lines): These can be a sign of more serious issues, such as illness, malnutrition, or trauma to the nail.

When to be Concerned:

  • If the ridges are deep or appear suddenly.
  • If they are accompanied by changes in nail color or texture.
  • If you experience other symptoms like fatigue or joint pain.

Possible Causes:

  • Beau's Lines: These can be associated with systemic illnesses or conditions like severe infections or malnutrition.
  • Osteoarthritis: Nail changes can sometimes be linked to arthritis, as noted in certain medical studies.

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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