Phlebitis refers to the inflammation of a vein, typically in the leg. It often occurs as a complication of intravenous (IV) therapy or the insertion of catheters. Phlebitis can be classified into three main types: superficial phlebitis, deep vein phlebitis, and migratory phlebitis. Superficial phlebitis affects veins close to the skin's surface, while deep vein phlebitis involves deeper veins and can be more serious.
