Question: what is the difference between chronic venous insufficiency and deep vein thrombosis?
Answer: CVI may affect up to 20% of adults. CVI can be caused by damaged valves in the veins or vein blockage. Both may be a result of deep vein thrombosis (DVT) or blood clots in the deep veins of the legs. If a clot forms in the superficial veins, there is a very low risk of DVT occurring.