Are Blue Veins on Your Hands Normal—Or a Warning Sign of Something More Serious?

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Varicose veins occur when vein valves become weak or damaged, causing blood to pool instead of flowing smoothly back to the heart. This causes the veins to stretch and swell, making them more visible and sometimes painful.

In the hands, these symptoms may be subtle at first. But if left untreated, varicose veins can lead to complications such as:

  • Thrombosis (blood clots)
  • Pulmonary embolism
  • Myocardial infarction (heart attack)
  • Stroke

If you notice visible blue veins accompanied by pain or discomfort, don’t ignore it. Seek medical evaluation as soon as possible.

Diagnosing the Cause: When to See a Doctor

Any time veins become suddenly more visible, especially with swelling, pain, or tenderness, it’s important to rule out a serious cause.

Your doctor may use:

  • Physical examination
  • Ultrasound imaging
  • Venous function testing

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