Spider veins occur when the tiny valves within the blood vessels become weakened or damaged. These valves are responsible for regulating blood flow and preventing blood from flowing backward. When the valves malfunction, blood can pool or accumulate in the affected veins, causing them to enlarge and become visible.
Several factors contribute to the development of spider veins. These include:
- Heredity: A family history of spider veins or varicose veins increases the likelihood of developing them.
- Hormonal changes: Hormonal fluctuations during pregnancy, puberty, or menopause can weaken vein walls and lead to the formation of spider veins.
- Aging: As we age, the elasticity of our blood vessels decreases, making them more prone to dilation and visible veins.
- Prolonged standing or sitting: Occupations or activities that involve long periods of standing or sitting can increase pressure on the veins, contributing to their development.
- Sun exposure: Overexposure to the sun's ultraviolet (UV) rays can damage the skin and blood vessels, making spider veins more noticeable.