Veins in our body have function of taking blood from peripheries towards heart. While standing or setting blood has to travel against gravity towards heart. This process of blood movement is done with help of calf pump and valves. Due to long duration standing or sitting this calf pump get affected or valves get compromised leading to permanent damage of valves. This leads to varicose veins. Damage to vein valve and wall leads to congestion of blood in leg and associated symptoms.