Which of the following is a common symptom of Deep Vein Thrombosis?

Swelling in the affected leg is a common symptom of Deep Vein Thrombosis (DVT) because the formation of a blood clot in a deep vein, usually in the legs, can obstruct normal blood flow. When blood flow is impaired, it leads to fluid accumulation in the tissues, resulting in swelling. This is often accompanied by additional symptoms such as warmth, redness, or pain in the area, but swelling is one of the most notable and easily recognizable signs.

In contrast, the other symptoms mentioned are not characteristic of DVT. Red eyes are associated with ocular issues and are unrelated to venous clots. Pain in the chest is more indicative of pulmonary embolism or other heart-related conditions, which may occur if a clot travels to the lungs. Headaches are typically linked to neurological or vascular issues but do not correlate with deep vein thrombosis. Understanding the specific symptoms associated with DVT is essential for timely diagnosis and treatment.