6 Common Causes of Spider Veins

6 Common Risk Factors for Spider Veins

Arteries carry blood away from your heart, and veins carry blood back to your heart. And inside every vein is a one-way valve that keeps blood flowing to your heart and prevents it from being pulled down by gravity.

A spider vein develops when a valve in a vein near the surface of the skin malfunctions, causing the blood to pool. Spider veins often manifest as small blue, red, or purple lines that spread like squiggly branches of a tree across the skin.

At MedWeight, Lasers & Wellness Centers in Irvine, California, our providers use the most effective treatments possible to erase these unsightly veins. We also field many questions from patients wondering if there’s a way to prevent developing spider veins. 

While researchers haven’t pinpointed the exact reason some people get spider veins and others don't, there are specific factors that increase your risk of developing them. Here’s a look at some of the most common risk factors for developing spider veins and, if you get them, how we can make them disappear. 

1. Age

There’s no way to avoid getting older. And, as you age, your veins get older with you. This means weaker valves and walls, increasing your risk of developing spider veins. This is why being over age 40 is one of the most common risk factors for developing the condition. 

2. Heredity

Researchers aren’t sure what exactly causes spider veins, but they do know that they tend to run in families. In other words, if you have close family members with spider veins or other vascular conditions, such as varicose veins, your risk of developing them increases, too.

3. Hormones

Women have a much higher risk of developing spider veins than men, and researchers believe one of the reasons is the hormone estrogen. Large amounts of estrogen can weaken the valves in your veins. When women go through puberty, pregnancy, and menopause, or if they take supplementary estrogen after menopause, the risk of developing spider veins increases.   

4. Inactivity

When you’re not active, your veins have to work extra hard to get your blood from your feet and lower limbs to your heart. Over time, if you stay inactive for long periods, this increases the likelihood that the valves in your veins will stop working. That’s why if you lead a sedentary lifestyle or have a job where you sit for much of the day, you increase your risk of developing spider veins.  

5. Sunshine

The harmful ultraviolet rays of the sun do more than affect the surface of your skin. They can also penetrate below the surface and break down your blood vessels over time. Sun exposure, therefore, increases your chances of getting spider veins, especially on your cheeks and nose or if you have light-colored skin.  

6. Weight

Being overweight or obese puts added pressure on all parts of your body, but especially on your lower limbs. This added strain increases compression on your veins, straining the walls and valves and increasing your risk of developing spider veins. 

How we erase spider veins

At Medweight, Lasers & Wellness Centers, our providers can help you erase unsightly spider veins using the most effective treatment options available: sclerotherapy and laser therapy.  


During sclerotherapy, your provider injects a special chemical solution into the spider vein. The solution irritates the walls of the vein, causing it to collapse. Over the following few weeks, your body eliminates the dead vein. This treatment usually takes 15-60 minutes, depending on how many veins you have treated.  

Laser therapy

Laser therapy involves the use of targeted wavelengths of light energy to destroy spider veins. As the laser targets the vein, the vein absorbs the heat. This causes the vein to break down. As with sclerotherapy, your body naturally disposes of the dead spider vein, leaving you with clear skin. 

The right treatment for you depends on several factors, including the size and location of your spider veins. Your provider reviews your medical history and examines your skin to recommend the right option for you. 

Regardless of which spider vein treatment you have, your Medweight, Lasers & Wellness Centers provider gives you detailed post-treatment instructions, which may include staying out of direct sunlight for several weeks and walking regularly to boost blood flow and help clear the dead veins. 

To learn more about treating spider veins, call 949-339-1624 or book an appointment online with MedWeight, Lasers & Wellness Centers today.

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