Conditions · Who gets varicose veins

Varicose Veins in Your 20s and 30s

Quick answer: Varicose veins can start in your 20s, most often because of a strong family history combined with long hours sitting or standing, little exercise, pregnancy or hormone use. Early signs include heavy legs, evening ankle swelling and fine spider or blue veins. Getting an ultrasound early lets you treat reflux while it is limited, or simply monitor it.

Illustration of lifestyle habits that cause varicose veins in young adults, LEDAS Busan

Key facts at a glance

  • Not just an older person's condition: vein reflux can begin in the teens and twenties.
  • Biggest early driver: heredity. LEDAS figures: one affected parent gives a daughter about a 62% chance and a son about 25%; two affected parents, over 90%.
  • Lifestyle risks: long study or desk hours, standing jobs, inactivity, smoking, frequent saunas, salty diets.
  • Hormones: pregnancy and hormonal medicines can weaken vein walls.
  • Early signs: heaviness, swelling, night cramps, spider veins, blue reticular veins.
  • Early is easier: limited reflux usually means simpler treatment, or just monitoring.

Can you get varicose veins in your 20s?

Yes. Many people are surprised to notice bulging or blue veins on their legs while still young. Varicose veins are caused by weak valves or weak vein walls, and for some people that weakness is present from birth. It may only take a few years of long sitting, standing or a first pregnancy for symptoms to appear.

Being young does not make varicose veins harmless. The condition is chronic and progressive: it does not go away by itself and tends to slowly advance. The good news is that young patients are often seen at an early stage, when treatment is simplest.

Why do young adults develop varicose veins?

Family history

This is the most important factor in young patients. LEDAS describes congenital causes as weak vein walls and family history. Its published figures suggest that if one parent has varicose veins, a daughter has around a 62% chance and a son around 25%; if both parents are affected, the chance is over 90%. If your parents had veins treated, mention it at your appointment. More on hereditary varicose veins .

Long hours sitting or standing

LEDAS specifically notes that students who sit for long periods are at risk. Long study sessions, gaming, desk jobs, part-time retail or hospitality work all keep the calf muscles still, so blood stagnates. See leg health for office workers .

Hormones and pregnancy

Female hormones make vein walls easier to stretch. Pregnancy adds extra blood volume and pressure; see varicose veins in pregnancy . Some hormonal medicines may also play a role; discuss them with your doctor.

Lifestyle habits

Inactivity, smoking, alcohol, very salty or high-fat food, and frequent saunas or hot baths disrupt venous circulation and widen veins.

What are the early signs?

  • Legs that feel heavy or tired after a day at school or work
  • Slight ankle swelling in the evening
  • Night cramps
  • Itchy skin around the ankles
  • Fine red or purple spider veins
  • Blue reticular veins visible through the skin
  • Small bulging veins behind the knee or on the calf

Try the LEDAS self-check checklist : if three or more of the 13 items apply, an ultrasound is worthwhile.

Should I get treatment while I'm young?

Not everyone needs treatment straight away. The first step is to understand what is happening inside your veins:

  1. Ultrasound first. A standing duplex ultrasound shows whether there is reflux in the main saphenous veins or only in small surface vessels.
  2. If reflux is minor: lifestyle changes, compression when needed, and a repeat scan in one to two years.
  3. If a main vein is leaking and causing symptoms: treating it early, while the problem is limited, often means less treatment overall. At LEDAS this is done with EVLT and sclerotherapy under local anesthesia, with no incision and same-day discharge, so you can return to study or work quickly.
  4. If you plan pregnancy: Dr. Kim Byoung Joon will discuss whether to treat before or after.

For age-specific timing questions, read is there a best age for treatment?

What can I do now to protect my veins?

  • Walk briskly every day, and take the stairs
  • Every 30–60 minutes of sitting, stand and do 10–20 calf raises
  • Raise your legs above heart level in the evening
  • Avoid very hot baths and long sauna sessions
  • Don't smoke, and keep salt moderate
  • Wear medical compression stockings on long flights or long shifts if advised

What your ultrasound result could mean for you

Ultrasound finding What it means Typical next step
No reflux Symptoms likely from another cause Healthy habits; see your general doctor if symptoms persist
Spider or reticular veins only Small surface vessels, no main-vein leak Optional sclerotherapy; monitoring
Early main-vein reflux, mild symptoms Disease has started but is limited Lifestyle, compression, re-scan in 1–2 years, or early treatment
Main-vein reflux with symptoms Reflux is driving your symptoms EVLT plus sclerotherapy, same-day discharge

Varicose veins in young adults – frequently asked questions

  • Is it normal to have visible blue veins at 25?

    Some visible veins are normal, especially in people with fair or thin skin. Veins that bulge, twist, or come with heaviness, swelling or itching are more likely to signal reflux. If you are unsure, an ultrasound can tell the difference in about 15–20 minutes.

  • If I treat my veins young, will they come back later?

    Treatment closes the veins that are leaking now, but your tendency toward vein disease remains, so new reflux can develop over the years. That is why LEDAS recommends follow-up ultrasound every one to two years, so any new problem is found while it is small.

  • Can sitting at a desk all day cause varicose veins?

    Long sitting does not create the underlying weakness, but it lets blood stagnate in the legs and can bring out or worsen varicose veins in people who are prone to them. Regular movement breaks, calf exercises and walking make a real difference.

  • Will exercise make my varicose veins worse?

    Most exercise helps, because working calf muscles pump blood upward. Walking, cycling and swimming are excellent. Very heavy lifting with breath-holding may add strain. If symptoms worsen with a specific sport, mention it at your consultation.

About this page

Clinical information: LEDAS Varicose Vein Clinic, led by Dr. Kim Byoung Joon , thoracic and cardiovascular surgeon, founding member of the Korean Society for Phlebology.
Medical reviewer: Dr. Kim Byoung Joon · Review status: Pending · Last updated: October 2026
This page is general information and not a diagnosis. Treatment is decided only after an in-person examination. Read our editorial policy .

Related: Are varicose veins hereditary? · Best age for treatment · Spider veins · Office workers' leg health · How to prevent varicose veins

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