Varicose veins of the lower extremities generally develop slowly and can remain without obvious clinical symptoms for years or even a decade after detection. Since they seem to be harmless, many patients drag their feet or use conservative treatments first. Unbeknownst to them, conservative treatments such as medications and compression stockings can only relieve the uncomfortable symptoms of varicose veins, and are not effective in impeding the continued progression of varicose veins. By the time they realize that serious complications have occurred, most patients are often at a loss as to what to do or even what to do. What are the common complications of varicose veins in the lower extremities? Acute redness and swelling should first be treated by a doctor to determine whether the acute redness and swelling of the lower extremities is caused by infection or by other factors such as superficial vein or deep vein thrombosis. If acute superficial vein thrombosis is the cause, especially if it is extensive, surgical removal of the thrombus is preferred along with treatment of varicose veins of the lower extremities; 2. Varicose vein rupture and bleeding In a small percentage of cases, even without clear trauma, varicose vein rupture and bleeding occurs in emergencies, and venous blood tends to gush out from the rupture. Due to the high pressure in the vein, ordinary compression cannot stop the bleeding quickly. Clinical cases have also been encountered in which spontaneous bleeding occurs in some elderly people during sleep at night, and because they are unaware of it, they go into a life-threatening hemorrhagic shock. When encountering this situation when awake, you should first lie flat and elevate the lower limbs, and then use gauze bandages to compress, which can stop the bleeding. After the initial bleeding stopped immediately seek medical help vascular surgeon, and early surgical treatment to avoid recurrence. 3, dermatitis, eczema, skin sclerosis Varicose veins can cause lower limb skin hyperpigmentation, itching, flaking, redness, hardening, and sometimes localized eczema caused by them may even spread to the whole body, resulting in pain for the patient. Therefore, once the skin condition is under control, surgery should be performed as soon as possible to treat varicose veins. 4. Ulcers occur Once ulcers occur, the course of the disease has dragged to the last stage. Although the best time for surgery has been missed, it still needs to be treated actively: first, through wound dressing, making the infection and trauma under control, surgery should be booked as soon as possible. There are several causes of foot ulcers with different treatments, so it is important to have a careful examination and a clear diagnosis by an experienced doctor. To summarize, either complication is the result of a delayed course of varicose veins without timely surgical treatment. The best time to operate on varicose veins should be when there is no pain and no clinical symptoms, with fast recovery and good results after surgery. Once thrombosis, aseptic inflammation, hyperpigmentation, ulceration, stasis dermatitis, rupture and bleeding occur in the veins, not only the patient suffers more pain, but also the effect of the surgery will be greatly reduced.