One hand has more veins than the other? is this normal?

Swollen hand veins.: Hand veins can swell for many reasons but the most common is certainly hereditary . Other factors would be level of hydration, aging, sun exposure and loss of elasticity. I doubt at age 33 that aging is a factor for you. Actually, I am amazed at the amount of women that i see with bulging hand veins. It is not uncommon for the veins on each hand to be different in size.