What is phlebitis?

Phlebitis refers to the inflammation of the wall of a vein, often occurring in the legs. This condition can arise from various factors, including injury to the vein, prolonged immobility, or as a complication of intravenous therapy. The inflammation can lead to pain, swelling, and redness in the affected area. Understanding phlebitis is crucial for recognizing and managing potential complications that may arise, especially in clinical settings where intravenous treatments are common.

The other options describe different medical conditions: the formation of blood clots in arteries pertains to thrombosis or embolism, while an infection of the lymph nodes is known as lymphadenitis. Swelling due to fluid retention relates to edema, which involves the accumulation of excess fluid in body tissues. Recognizing the distinct definitions and implications of these terms helps in effectively diagnosing and treating various vascular issues.