The lesion initially occurs on the lower inner side of the calf1/3the edge of the tibia, more on the left side than on the right, the lesion occurs insidiously within the subcutaneous fat tissue, being1~3nodules as large as soybeans to broad beans, gradually accumulate into hard plaques, with clear edges, the skin on top is pale red or skin-colored, with mild pain and tenderness, then it slowly develops upwards, that is, new small nodules appear at the edge of the original large plaque, making its area gradually increase, fixed in the subcutaneous tissue, above which are dilated or cystic veins, when touched they are uneven, hard and soft, the largest plaque can reach15×10cm, the lower edge can reach above the medial malleolus, and the upper edge can reach the lower inner side of the calf2/3It does not involve the lateral side of the calf, prolonged standing or walking causes local edema to worsen, the plaques become hard and tight, and the redness and swelling around the edges become more pronounced, local pain and tenderness are also more obvious, but there are no symptoms such as fever and swelling of the inguinal lymph nodes, after rest the edema subsides, but the plaques do not show significant regression, after treatment the plaques regress mostly or almost completely, subcutaneous fat tissue atrophies to varying degrees, the epidermis becomes thinner, smooth and shiny, pigmentation deepens or there is some desquamation, there is varying degrees of pigmentation on the lesions that do not fade over time1~2A nodular erythema-like lesion not associated with hard plaques, all such patients have mild to moderate varicose veins of the great saphenous vein and its branches, even if varicose veins are present on both sides, but only one side of the calf has hard subcutaneous plaques, and all the calves with varicose veins have developed this subcutaneous tissue lesion, and varicose veins occur before the subcutaneous tissue lesion1~30 χρόνια.