Deep Vein Thrombosis (DVT) Deep vein thrombosis (DVT) occurs when a blood clot develops with a deep a vein, commonly in the legs. It can occur in one or more veins and can have some serious consequences should any of the clots break loose and travel to the lungs. Learn More about DVT Varicose Veins Varicose veins are dark, enlarged, twisting veins that occur most commonly in the legs. They range in severity from merely cosmetic (spider veins) to severe with a number of associated, uncomfortable symptoms and potential complications. Learn More about Varicose Veins Vein Complications? We’re Here to Help Request a Vein Disease Appointment Today Schedule Now