The dangers of varicose veins include aesthetic effects, soreness and swelling of the lower limbs, loss of appetite, etc. Complications include rupture and bleeding and phlebitis. Varicose veins are often caused by stagnation of blood flow and thinning of the walls of the veins. Common varicose veins are lower extremity varicose veins and esophagogastric fundus varicose veins. Varicose veins in the lower limbs mostly affect the aesthetics, and the patients may experience soreness, heaviness, skin pigmentation, itching, etc. In the case of esophagogastric varicose veins, the patients may have to pay more attention to their skin color. In case of esophagogastric varicose veins, patients with severe underlying diseases such as cirrhosis of the liver may suffer from loss of appetite, indigestion and so on. Possible complications of varicose veins on the surface of the body include phlebitis, venous thrombosis, embolization of vital organs, and the most serious complication of esophagogastric fundal varicose veins is rupture and hemorrhage, which can be life-threatening. The most serious complication is rupture and hemorrhage, which can be life-threatening. People with varicose veins need to seek early and standardized treatment.