Varicose veins are swollen, twisted, and enlarged veins that you are seen under the skin. They are often red or blue in colour. They most often appear in the legs, but can occur in other parts of the body.
CausesNormally, one-way valves in the leg veins keep blood moving up toward the heart. When the valves do not work properly, they allow blood to back up into the vein. The vein swells from the blood that collects there, which causes varicose veins.Varicose veins are common, and affect more women than men. They do not cause problems for most people. However, if the flow of blood through veins becomes worse, problems such as leg swelling and pain, blood clots, and skin changes may be present.
Risk factors include:Sclerotherapy, using a liquid or foam chemical injection to block off a larger vein Microsclerotherapy, using a liquid chemical injection to block off smaller veins Laser surgery (EVLT), using light energy to block off a vein Endovenous ablation therapy, using heat and radiofrequency (RFA) waves to block off a vein Endoscopic vein surgery, using a small lighted scope inserted through a small incision to block off a vein