Answer:
Temporarily rising blood pressure and/or body temperature. When you’re exercising or working with your hands, blood flow in the area increases. Veins also swell in warmer conditions, as the body sends blood toward the surface of the skin to cool down. When you’re cold, veins tend to shrink temporarily.
Weight lifting. Serious weight lifters develop hard muscles and enlarged, rope-like arm/hand veins.
Aging. As we age, body fat is redistributed and skin becomes thinner, making veins more prominent.
Underweight. If you’re thin, your hand veins may become more visible.
Heredity. Large veins may run in your family.
Superficial blood clot. You may feel or see a small bulge in a hand or wrist vein, due to injury or use of an IV.
Phlebitis. Large veins may be due to vein swelling, or inflammation.
Varicose veins. Although they most often occur in the legs, varicose veins can show up in arms or hands, too.
Step-by-step explanation:
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