What are common signs of deep vein thrombosis (DVT)?

Swelling, pain, redness, and warmth in the affected leg are classic signs of deep vein thrombosis (DVT). DVT occurs when a blood clot forms in a deep vein, often in a leg. These symptoms arise due to the body's inflammatory response to the clot, which leads to increased blood flow and pooling in the area. The swelling occurs because of fluid buildup, while redness and warmth are due to the inflammation and increased circulation around the site of the clot. Recognizing these signs is crucial for early diagnosis and treatment to prevent more severe complications, such as a pulmonary embolism, which can occur if a clot dislodges and travels to the lungs. Other options do not specifically relate to the localized symptoms associated with DVT.