Vertical ridges on fingernails are very common and usually harmless.
🧠 What they are
Onychorrhexis refers to long, thin lines that run from the cuticle to the tip of the nail.
👍 Most common causes (usually normal)
- Natural aging (very common)
- Dry nails or lack of moisture
- Minor repeated trauma (typing, nail pressure)
- Dehydration
🧪 Possible nutritional links (less common)
Sometimes more noticeable ridges may be associated with:
- Low iron
- Vitamin B12 deficiency
- Poor overall nutrition
But this is not always the case.
⚠️ When to pay attention
See a doctor if ridges come with:
- Nail splitting or brittleness
- Color changes (dark lines or discoloration)
- Pain, swelling, or sudden changes in many nails
💡 Simple care tips
- Keep nails moisturized (hand cream or oil)
- Eat a balanced diet
- Avoid harsh chemicals and excessive nail trauma
- Stay hydrated
🧾 Bottom line
In most people, vertical nail ridges are a normal part of aging or dryness, not a disease.
If you want, I can also explain horizontal nail lines (which are more medically important) so you can compare the difference easily.
