Why do I have red lines under my nails and what do they mean?

Red lines under the nails, known as erythronychia, can appear in different patterns like horizontal or vertical lines. These lines are important clues to understanding what might be happening with your nails.

Types of Red Lines:

• Horizontal Red Bands: These are less common and can be associated with specific conditions.
• Vertical Red Lines: These are more common and can be seen in a variety of nail disorders.

Causes:

• Longitudinal Erythronychia: This is when you see individual or multiple red lines running from the base to the tip of the nail. It can occur due to benign or sometimes more serious nail conditions.
• Color and Shape: The color and shape of the lines can provide important clues. For example, changes in the nail color or shape can indicate different health issues.

If you notice these changes, consider discussing them with a healthcare provider for further evaluation. They can help determine if the lines are a benign variation or if they require further investigation.