Doctor Explains What It Means If You Have Ridges On Your Fingernails


  • Appearance : Lines that run parallel to the cuticle, dividing the nail into segments.
  • Medical Term : Beau’s lines (a specific type of horizontal ridge).
  • Possible Causes :
    • Severe illness or infection (e.g., pneumonia, high fever)
    • Major surgery or trauma
    • Chemotherapy or radiation treatment
    • Zinc deficiency
    • Peripheral vascular disease (reduced blood flow to extremities)
    • Diabetes or poorly controlled blood sugar levels
  • When to Worry : Horizontal ridges often form during periods of significant stress or illness. If you notice new or worsening ridges, consult a healthcare provider.

Additional Nail Changes to Watch For

While ridges themselves aren’t always cause for concern, other nail abnormalities paired with ridges may warrant further investigation:

  • Discoloration : Yellowing, bluish hues, or dark streaks.
  • Brittleness : Easily breaking or splitting nails.
  • Thickening or thinning : Changes in nail texture.
  • Pitting or dents : Small depressions on the nail surface, common in psoriasis.

How to Address Nail Ridges

If you’re concerned about nail ridges, here’s how to address potential causes:

1. Improve Nutrition

  • Ensure your diet includes adequate amounts of:
    • Iron-rich foods (spinach, red meat, lentils)
    • Zinc sources (oysters, pumpkin seeds, chickpeas)
    • Vitamin B12 (eggs, dairy, fortified cereals)
    • Omega-3 fatty acids (salmon, walnuts, flaxseeds)

2. Stay Hydrated

  • Drink plenty of water throughout the day to maintain nail hydration.

3. Protect Your Nails

  • Wear gloves when doing household chores involving harsh chemicals.
  • Use moisturizers or cuticle oils to keep nails supple.

4. Manage Stress

  • Practice relaxation techniques like meditation, yoga, or deep breathing exercises.

5. Consult a Professional

  • If ridges persist or worsen despite lifestyle adjustments, see a dermatologist or primary care physician. They may recommend blood tests or imaging studies to rule out underlying conditions.

Final Thoughts

Your nails act as windows to your overall health, providing subtle clues about what’s happening inside your body. While vertical ridges are typically benign and associated with aging, horizontal ridges or additional nail abnormalities may point to more serious concerns. By staying informed and proactive, you can better understand what those ridges might be telling you—and take steps to ensure both your nail and overall health remain strong.