Question: what is the difference between superficial thrombophlebitis and deep vein thrombosis?
Answer: The blood clots are usually superficial (ie, close to the surface of the skin). Deep clots can cause DVT, which is more dangerous. What are the differences between thrombophlebitis and DVT? Superficial thrombophlebitis causes a painful swelling along the course of the veins close to the surface of the skin.