The majority of people with varicose veins start from soreness and discomfort after prolonged standing or sitting in the lower extremities, and then gradually develop tortuous and dilated superficial veins, which may initially appear as capillary dilatation or reticular venous dilatation, which is a relatively mild condition. As the disease progresses, the blood vessels gradually expand to the point of being visible to the naked eye and earthworm-like. At this time, it enters the middle stage of varicose veins, and if it cannot be treated timely or conservatively, there will be a change of skin color, and some light brown petechiae and petechiae will appear, which gradually fuse into patches. On this basis, eczema-like changes may occur, or sclerosis of the subcutaneous fat, and as the condition worsens again, ulcers may appear, which do not heal over the years, so it is also called old rotten leg or polyposis leg.