If one nail develops a deep ridge while others remain smooth, it could indicate trauma to that nail matrix or, rarely, a growth.
2. Ridges with Discoloration
Yellow, green, or black discoloration along with ridges could indicate fungal infection or other issues.
3. Sudden Onset
If ridges appear suddenly on multiple nails, especially if accompanied by other symptoms, it's worth investigating.
4. Ridges with Nail Changes
Splitting, crumbling, or pitting along with ridges may indicate underlying conditions.
What Else Causes Vertical Nail Ridges?
Nutritional Deficiencies
While age is the most common cause, certain deficiencies can contribute:
Iron deficiency – Can cause brittle nails with ridges
B vitamin deficiencies – Especially B12
Protein deficiency – Nails are made of protein
Dehydration
Dry nails are more likely to show ridges. Hydration matters—both drinking water and moisturizing nails.
Trauma
Injury to the nail matrix can cause permanent ridges on that nail.
Medical Conditions
Less commonly, vertical ridges can be associated with:
Thyroid disorders
Anemia
