Wondering why are my veins so visible? Visible veins can be normal and may become more noticeable with aging, exercise, heat, dehydration, or changes in body weight. Healthy veins generally lie flat beneath the skin without causing discomfort. In contrast, diseased veins may appear enlarged, twisted, or bulging and can be accompanied by swelling, aching, heaviness, itching, or skin changes. USA Vein Clinics can evaluate visible veins with diagnostic testing and discuss appropriate treatment options when vein disease is suspected.
https://www.usaveinclinics.com/blog/visible-veins/