Treatment for thrombophlebitis takes how long to improve?

Time varies.: There are 2 kinds of blood clots in the legs-superficial and deep. Superficial clots are called superficial phlebitis and present usually with pain, redness and tenderness on the surface of the skin around a visual vein or varicose vein. Deep phlebitis (DVT) usually presents with swelling, pain and tenderness of the medial thigh or posterior calf. Treatment time varies with each.

Variable: The deep and superficial thrombophlebitis resolve at variable rates. Usually over 2 or 3 months for the vessel to re-canalize . However sometimes the vein does not recanalize.