If the veins in your hands are clearly visible, it’s usually normal and not automatically a sign of any disease.
Common reasons veins are visible:
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Low body fat – Less fat under the skin makes veins stand out more.
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Thin or fair skin – Veins are easier to see through lighter or thinner skin.
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Exercise – Blood flow increases and veins temporarily enlarge.
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Warm temperatures – Heat makes veins dilate.
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Aging – Skin gets thinner over time, making veins more noticeable.
It is not specifically a sign of cancer (CA) in most cases.
However, you should see a doctor if visible veins are accompanied by:
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Pain, swelling, or redness
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Sudden change in one hand only
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Hard, cord-like veins
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Skin color changes
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Unexplained weight loss or fatigue
If you’d like, tell me your age and whether you have any other symptoms, and I can give more specific guidance.