Vanish Vein Clinic specializes in the treatment of varicose & spider veins with minimally invasive FDA approved procedures. Treat your veins today with outpatient procedures completed in less than an hour. We specialize in... - Endovenous Ablation - Sclerotherapy - Ambulatory Phlebectomy What is Chronic Venous Insufficiency? Chronic venous insufficiency is a type of vein disorder that can cause the following symptoms: Undesirable cosmetic varicose or spider veins Leg pain (throbbing, aching, or burning) Fatigue, heaviness, or itching Restlessness leg syndrome Swelling and edema Skin discoloration Wounds that don’t heal Bleeding Blood clots Vein inflammation and irritation (superficial thrombophlebitis)