Horizontal ridges in fingernails are usually due to a condition called Beaus lines, which are grooves or dents that run across the nail plate. Beaus lines occur when nail growth is interrupted at the nail matrix, which is located under the cuticle. This can happen due to a variety of reasons, including:
- Illnesses or infections
- Nutrient deficiencies
- Inflammatory conditions such as psoriasis
- Injury to the nail matrix
- Repetitive picking at the nails or cuticles
- Chemotherapy
- Metabolic conditions
- Diminished blood flow to the fingers
If you notice horizontal ridges in your nails and dont know what caused them, its important to see a healthcare provider to rule out any possible health conditions. Treatment for Beaus lines focuses on the underlying cause of the changes to your nails. For example, if you have developed Beau’s lines due to diabetes, successfully managing your blood sugar may reduce these horizontal fingernail ridges.
