👉 Arc veins are a type of venous structure that resembles an arc or horseshoe shape and are typically found in the lower legs, particularly in the calves. They are formed by the reformation of small, thin-walled veins that were previously present but have since disappeared, leaving behind a network of interconnected channels. Arc veins usually develop in response to chronic venous insufficiency and can be visible as blue or purple lines on the skin's surface. They often accompany other venous abnormalities, such as varicose veins, and can be treated with compression therapy or surgical intervention.
