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The key is not simply whether your veins are visible.
It’s **how they look, how quickly they changed, and whether other symptoms are occurring at the same time**.
Here are some common reasons your hand veins may become more noticeable—and some signs that mean it is worth speaking with a healthcare professional.
## Visible Hand Veins Are Often Completely Normal
Before assuming the worst, it’s important to understand why veins are visible in the first place.
Veins are blood vessels that carry blood back toward the heart. Some veins run relatively close to the surface of the skin, making them easier to see.
The backs of the hands are particularly prone to showing superficial veins.
People also naturally have different amounts of tissue beneath the skin.
Someone with naturally thin skin or less tissue covering the veins may have very prominent veins, while another person of the same age and similar health may have barely visible veins.
Genetics can influence the size and location of superficial veins, as well as skin thickness and the amount of tissue beneath the skin.
That’s why prominent veins alone are generally **not enough to indicate that something is medically wrong**.
