Venous disease includes a spectrum of disorders, from leg swelling to varicose veins and spider veins. Generally hereditary, venous diseases can be triggered by such conditions as pregnancy, obesity, heart problems, and blood clots. The most common cause of vascular disorders is poor valve function of the veins in the legs.

The mainstay of treatment is external compression with prescription stockings, though ultrasound can also be useful to further diagnose the cause of the disorder in many cases. For varicose veins, laser treaments, surgery, or injections can offer very positive results.