Varicose Veins are caused due to weak or damaged valves of the veins. When these valves do not function properly, blood flows back again in the veins causing them to enlarge and swell.
Causes of Varicose Veins are:
- Age: As age increases, valves tend to lose their elasticity. This causes stretching of the valves and as result the flaps separate, thus damaging the function of the valve.
- Pregnancy: Some women may get varicose veins during pregnancy. In pregnancy, the volume of the blood increases, but the flow of blood from the leg veins is decreased. This in turn causes veins to enlarge.