Noticing purple or bluish veins on your legs can be unsettling. In many cases, these veins are varicose veins or spider veins, which occur when blood vessels located close to the skin become enlarged or weakened, making them more visible. While they may initially seem like a cosmetic concern, they can also signal underlying circulation issues that should not be ignored. Recognizing the causes, risk factors, and treatment options can help you take early action and maintain healthy blood flow