Glossary

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Phlebitis: An inflammation of the leg veins, either in the surface veins (more common) or deep veins; most commonly caused by an infection or an injury. The affected vein looks red, feels like a cord in the calf or thigh, is painful and may be itchy. Phlebitis can cause a blood clot to form, and this clot can then embolize (break away and travel through the bloodstream), resulting in a pulmonary embolism where the clot gets stuck in the lungs and can be fatal.