If you have lines on your nails, it means you have changes in nail growth that can signal anything from normal aging to underlying health conditions.
It is a common myth that vertical lines always mean you have a serious disease. In reality, the type of line (vertical vs. horizontal) and its appearance matter greatly. Here is a breakdown of what those lines might actually indicate:
1. Vertical Ridges (Running from cuticle to tip)
Most Common Cause: Aging
- What it is: These are often called "longitudinal striations." Just like wrinkles on your skin, vertical ridges are a very common sign of aging. As we get older, cell turnover slows down, and the nail plate becomes thinner and more prone to these ridges.
- Other Causes:
- Dehydration: Dry nails can develop more prominent ridges.
- Nutritional Deficiencies: Occasionally, they can signal a lack of iron, zinc, or B vitamins, but this is less common than simple aging.
- Trauma: Minor injury to the nail matrix (the root of the nail) can cause ridges.
When to worry: If the ridges are accompanied by color changes (like dark streaks), splitting, or pain, see a doctor.
2. Horizontal Lines (Running side to side)
These are generally more concerning than vertical lines and often indicate a temporary interruption in nail growth due to stress on the body.
A. Beau’s Lines
- What it is: Deep, indented horizontal grooves.
