This is also a good opportunity to discuss important travel health issues including safe food and water, accidents, sun exposure and insect bites. Many of the problems experienced by travellers cannot be prevented by vaccinations and other preventive measures need to be taken.
Age and genetics. As you get older, the veins in your hands may become more visible. Additionally, some peopleâs veins are naturally more visible. This could be due to skin pigmentation, body fat distribution, or a variety of other genetic factors. In most cases visible veins in hands are not a sign of a medical condition, or of any other problems.
Veins may be located deep or superficial in the body. The majority of superficial veins are easily visible on the skin and legs. In some cases, the superficial veins may also be visible on the neck and face. Because the veins carry deoxygenated blood, they appear dark and blue.The superficial veins in the arm appear blue because they carry deoxygenated blood.he increased pressure causes engorgement of the veins with blood. Once the veins engorge with blood, the veins become large and distended and appear blue. Varicose veins may appear anywhere on the leg, but are more prominent on the thigh.