Spider veins appear due to unhealthy valves inside the larger veins in your legs, face, or has. Damaged valves cause venous blood to flow backward rather than upward toward your heart. This backed-up blood leads to non-functioning veins just beneath the surface of your skin, presenting themselves as spider veins.
You’re not alone. Millions of adults of all ages experience spider veins due to preventable and unpreventable causes. Some possible causes of spider veins include:
- Hormonal Shifts
- Long Periods of Standing or Sitting
- Sun Damage
- Weight Fluctuations