Visible veins on the legs are extremely common, especially as we get older. Most of the time they’re harmless. Still, it helps to understand why they appear, how to care for your legs, and when it’s time to call a doctor.

First, a quick explanation

Your leg veins have a tough job: they carry blood back up to your heart against gravity. To help, they have tiny one-way valves that keep blood from flowing backward. When those valves weaken, blood can pool in the veins, making them swell, twist and show through the skin.

1. Varicose veins

These are larger veins that bulge, twist, and often look like cords under the skin. They can be dark purple, blue, or close to your skin color. Some people have no symptoms at all. Others feel aching, heaviness, burning, cramping or itching, especially after standing or sitting for a long time.

2. Spider veins

Spider veins are the smaller, thinner cousins of varicose veins. They sit close to the skin’s surface and look like little red, blue or purple webs or branches. For most people they’re simply a cosmetic issue.

3. Getting older

Over the years, the valves in your veins go through natural wear and tear. That makes it easier for blood to collect, which is why many people notice more visible veins as they age.

4. Sitting or standing for hours

When you stay in one position for a long time, your calf muscles aren’t helping pump blood back up. People with jobs that keep them on their feet or at a desk all day often notice more visible veins.

5. Hormones and pregnancy

Hormones can relax vein walls, which is one reason women are more likely to develop varicose veins. Pregnancy increases the amount of blood in the body and puts extra pressure on leg veins. Menopause, birth control pills and hormone treatments can also play a role.

6. Family history and weight

If your parents or grandparents had varicose veins, your chances are higher. Extra body weight also adds pressure on the veins in your legs.

⚠️ When it’s more than a cosmetic issue

Most visible veins are harmless. But get medical help right away if you notice:

• Swelling in just one leg, especially with pain, tenderness, warmth or redness, often in the calf
• A vein that suddenly becomes hard, red, warm and painful
• A sore or ulcer near the ankle that won’t heal
• A vein that bleeds

One-sided swelling, pain and warmth can be signs of deep vein thrombosis (DVT), a blood clot in a deep vein. It’s treatable, but it’s serious, because a clot can travel to the lungs.

Call emergency services immediately if leg symptoms come with sudden shortness of breath, sharp chest pain, coughing up blood or fainting.

Simple ways to care for your legs

If your veins are mostly a cosmetic concern, these everyday habits may help with comfort and circulation:

• Keep moving. Walking gets your calf muscles pumping.
• Raise your legs when you’re resting.
• Change position often if you sit or stand for long periods.
• Keep a healthy weight.
• Ask a doctor whether compression stockings are right for you.

If the look or discomfort bothers you, talk to a doctor. There are quick, minimally invasive treatments available today.

This article is for general information only and isn’t a substitute for medical advice. If you’re worried about your veins, talk to a healthcare professional.