What leads to varicose veins? Varicose veins are primarily because of weakened or broken valves inside the veins, resulting in blood pooling plus the veins getting to be swollen and twisted. Other triggers might contain venous stream obstruction because of thrombosis or additional extrinsic compression by pelvic masses like fibroids https://www.sgvascularctr.com/varicose-vein-treatment-in-singapore-everything-you-need-to-know/