Disease analysis: Hello, swelling of lower limbs is common in deep venous thrombosis and varicose veins of lower limbs. Pathogenic causes of deep venous thrombosis of lower limbs include vascular injury (possibly caused by recent leg trauma or surgery), hypercoagulable state of blood and slow blood flow, often manifested as sudden swelling of limbs, accompanied by swelling pain and superficial vein dilatation. The main cause of varicose veins of lower limbs is that the congenital vascular wall membrane is weak or the same posture is rarely changed for a long time, blood accumulates in lower limbs, and the venous valve is destroyed over time, resulting in high venous pressure, which makes the blood vessels protrude from the skin surface, which is more common in people engaged in persistent manual labor or standing work; The main manifestations are the dilatation, elongation and tortuosity of superficial veins of lower limbs, resulting in symptoms such as soreness, fatigue and heaviness of the affected limbs. In severe cases, it is often accompanied by complications such as leg ulcers or superficial phlebitis, and edema may occur after standing for a long time. Suggestions: I suggest you go to general surgery or vascular surgery as soon as possible, have an ultrasound examination, and then follow the doctor's advice after the diagnosis. Deep venous thrombosis of lower limbs should be rested in bed, the lower limbs should be raised, and anticoagulant, platelet aggregation prevention and thrombolytic drugs should be applied. The symptoms of varicose veins of lower limbs can be treated conservatively first, such as reducing standing or sitting for a long time, wearing elastic socks or elastic bandages and raising the lower limbs. If circumstances permit, surgery can be performed.