What is a common symptom associated with acute venous thrombosis?

Unilateral leg swelling is a hallmark symptom of acute venous thrombosis (DVT). This occurs because a clot in the deep veins of the leg obstructs normal blood flow, leading to increased venous pressure and fluid accumulation in the surrounding tissues. As a result, the affected leg often becomes noticeably swollen compared to the other leg.

The other symptoms listed are not characteristic of acute venous thrombosis. Chest pain may suggest issues related to pulmonary embolism, often a complication of DVT, but it is not typically a direct symptom of the thrombosis itself. Intermittent claudication is mainly associated with arterial insufficiency rather than venous issues; it usually manifests as pain during physical activity due to poor blood flow. Claustrophobia is a psychological condition that does not have a direct relationship with venous thrombosis.