Small valves inside the veins help blood flow properly through them. Varicose veins develop when these valves do not work properly, allowing blood to collect in the veins. Varicose veins are dark purple or blue colored swollen, enlarged, tortuous and twisting veins; the milder form is known as spider veins due to high resemblance with the spider legs. It has high prevalence in pregnant women and … [Read more...]