How do Varicose Veins Form?
Varicose veins develop when the one-way valves inside the veins stop functioning properly. These valves normally help blood flow back toward the heart, but when they weaken or fail, blood can pool in the legs and increase pressure inside the veins. Over time, this pressure causes veins to enlarge, twist, and become visible beneath the skin.
Key Takeaways
- Veins use one-way valves to move blood back toward the heart
- Weak or damaged valves can cause blood to pool in the legs
- Increased pressure inside the veins leads to varicose veins
- Venous insufficiency may also cause swelling, pain, and heaviness
- Varicose veins can worsen over time without treatment
What Do Veins Normally Do?
Veins are responsible for carrying blood from the body back to the heart.
Because blood in the legs must travel upward against gravity, veins contain special one-way valves that:
- Keep blood moving in the correct direction
- Prevent blood from flowing backward
- Support healthy circulation
What Happens When Vein Valves Stop Working?
When vein valves weaken or become damaged:
- Blood flows backward
- Blood pools inside the veins
- Pressure increases in the legs
This condition is called venous insufficiency or venous reflux.
Over time, increased pressure causes veins to:
- Stretch
- Enlarge
- Become twisted or bulging beneath the skin
These enlarged veins are known as varicose veins.
What Symptoms Can Varicose Veins Cause?
Varicose veins may lead to:
- Aching pain
- Leg heaviness
- Fatigue
- Swelling
- Itching
- Burning sensations
- Skin discoloration
Symptoms often worsen after prolonged standing or sitting.
What Increases the Risk of Varicose Veins?
Common risk factors include:
- Family history
- Pregnancy
- Obesity
- Prolonged standing or sitting
- Aging
- Limited physical activity
Many people develop varicose veins due to a combination of factors.
Can Varicose Veins Be Treated?
Yes. Modern treatment options may include:
- Compression therapy
- Exercise and lifestyle changes
- Venous ablation
- VenaSeal™
- Sclerotherapy
- Minimally invasive vein procedures
A vein specialist can recommend treatment based on symptoms and vein ultrasound findings.
About Dr. Brian Keyashian
Dr. Brian Keyashian is a vascular and endovascular surgeon at BASS Medical Group specializing in venous disease, vascular surgery, carotid artery disease, peripheral vascular disease, and minimally invasive vein procedures.
Video Transcript
Veins in the circulatory system function to bring blood from your body back to your heart.
To counteract the effects of gravity, veins have special one-way valves that help blood flow in the right direction.
When these valves stop working, pressure builds up in the vein, leading to the formation of varicose veins and the associated symptoms.
I'm Dr. Brian Keyashian. Thanks for watching!
Frequently Asked Questions
What is venous insufficiency?
Venous insufficiency occurs when vein valves stop functioning properly, allowing blood to pool in the legs.
Why are varicose veins usually found in the legs?
Leg veins must work against gravity to return blood to the heart, making them more vulnerable to pressure buildup.
Can varicose veins worsen over time?
Yes. Untreated venous insufficiency may gradually progress and cause worsening symptoms.
Are spider veins related to varicose veins?
Yes. Spider veins and varicose veins can both result from underlying vein and circulation problems.
Medical Disclaimer: Content provided by BASS Medical Group is intended for general informational purposes only and does not establish a physician-patient relationship. This information should not be used as a substitute for professional medical advice, diagnosis, or treatment.
