Spider Veins

Vein Institute of Westchester
Michael F. Gioscia, MD FACS, ABVLM
Vascular Surgeon & Vein Specialist located in West Harrison, NY
Spider veins are tiny blue, red, or purple lines on your skin. The veins are flat and usually appear on your legs, but they can also show up elsewhere.
Spider veins typically signal a problem with the normal functioning of your vein. In some cases, spider veins form when one of the valves inside your veins doesn’t close properly. This causes blood to leak, pool, and become stuck in your vein. If your spider veins aren’t properly treated, they can exert enough pressure to weaken your vein walls. This can allow the spider veins to grow larger and spread.
Spider veins can turn into varicose veins in some cases — large, twisted, and more bulbous-looking veins. Varicose veins usually have a rope-like appearance underneath your skin and can be painful at times, but spider veins don’t typically cause any discomfort or pain.
What causes spider veins?
It isn’t exactly clear what causes spider veins. Most experts look at the hormonal disruption and certain hormonal factors. This might explain why spider veins most commonly show up in women, especially during pregnancy.
Other contributing factors or reasons for spider veins include:
- Hormonal therapy or birth control
- A history of blood clots
- Obesity
- Aging
- Family history
If you have a job that requires lots of standing, such as a hairstylist or factory worker, this can also increase your chances of developing spider veins.
