Varicose veins are distended and enlarged veins, usually dark purple. They may also be lumpy or rotated in look. They mostly happen in the legs. Other symptoms include:throbbing, painful legs, distended feet and ankles, and muscle cramp. Your GP can diagnose varicose veins founded on these symptoms.
In a healthy vein, body-fluid flows smoothly to the heart. The body-fluid is prevented from going backwards by a sequence of valves that open and close to let blood through. If the valves are impaired, the body-fluid can flow rearwards and can collect in the vein, eventually causing it to be distended and enlarged.