Why do i have really prominent veins in my hands?
Are you very slim? Veins tend to stick out on thin people and become more prominent as we get older. In children there is usually a thick layer of tissue (mainly fat) under the skin and it’s often difficult to see any veins at all. This layer tends to be thicker in females than in males, and in both sexes it decreases with age. In addition our skin becomes thinner as we get older which also makes the veins more visible. If you are fit and well it is very unlikely that your prominent veins are anything to worry about. Guitar playing will not cause prominent veins.