Horizontal ridges on nails are visible lines or dents that run across the nail. They are usually due to a condition called Beau’s lines, which can occur when something interrupts nail growth. Possible causes of Beau’s lines include:
- Illness or injury
- Malnutrition
- Severe emotional stress
- Zinc deficiency
- Protein deficiency
- Anemia
- Thyroid issues
If the cause of the horizontal ridges is unclear, it is important to see a healthcare provider to rule out any possible health conditions. Vertical ridges, on the other hand, are often an indication of aging.
It is important to note that ridges in nails can also be a sign of a nutrient deficiency or a health condition. For example, iron deficiency can cause vertical nail ridges and spoon nails, which have a depression in the middle. Zinc deficiency can cause Beau’s lines and white spots on nails. If you are experiencing nail ridges, it is important to talk to your healthcare provider to determine the underlying cause and receive appropriate treatment.
In terms of treatment, usually, nails will become smoother if you treat the underlying cause of the ridges. Buffing nails to remove ridges is not recommended, as it can seriously thin the nail. Instead, treatment focuses on the underlying cause of the changes to the nails. For example, if you have developed Beau’s lines because of diabetes, successfully managing your blood sugar may reduce these horizontal fingernail ridges.
