👉 Amp veins, also known as accessory veins or collateral veins, are smaller veins that connect to larger veins in the same area. They often develop during fetal development and can persist into adulthood, connecting blood flow between arteries and veins. Amp veins may be present in various locations throughout the body, including the face, neck, arms, and legs, and can sometimes become visible on the skin's surface. While they usually do not cause any problems, amp veins can sometimes become enlarged or inflamed, leading to discomfort or cosmetic concerns.