What is phlebitis?

Phlebitis is defined as the inflammation of a vein, usually occurring in the legs. This condition can result from various factors, including injury to the vein, autoimmune disorders, or infections. When a vein becomes inflamed, it may cause symptoms such as redness, swelling, warmth, and pain at the site. Recognizing the signs of phlebitis is essential, especially in a clinical setting, as it can lead to further complications if not addressed, such as thrombophlebitis, which involves both inflammation and clot formation in the affected vein.

Understanding phlebitis is important for those involved in administering medications intravenously or managing intravenous therapy, as it can impact patient safety and treatment efficacy. The other options discuss different conditions: increase in blood viscosity pertains to the thickness of the blood, a blood clot pertains to thrombosis, and allergies relate to immune responses, all of which are distinct from the inflammatory process seen in phlebitis.