If your veins are visible in your hand, it is a signal of

• A very sudden appearance for no apparent reason

If you have not changed your diet or modified your physical activity, and new, very prominent or unusual veins appear, it may be helpful to talk to a healthcare professional to get an assessment.

• Pain, swelling or a feeling of heat

If a visible vein is accompanied by discomfort, localized swelling, or an unusual sensation, it’s best to seek medical advice promptly. These types of symptoms always warrant evaluation to rule out a  circulatory disorder .