When veins are working properly, they return blood to the heart for reoxygenization. When their valves fail, leak or are damaged, some of the blood flows in a backward direction instead of toward the heart, where it may collect in a pool. This can cause the veins to become distended, and that's when you can get symptoms such as pain, burning, itching, throbbing and fatigue. 

 

Varicose veins may also limit your ability to work or your capacity for leisure activities. Left untreated, varicose veins may cause serious health issues such as venous leg ulcers, skin discolorations or blood clots. 

 

Risk Factors: Heredity, Pregnancy, Occupation, Obesity, Age, Trauma