A deep vein thrombosis (DVT) occurs when a blood clot forms in a deep vein, usually in the leg. Symptoms may include:
- Sudden swelling in one leg
- Pain or tenderness
- Warmth in the affected area
- Redness or discoloration
- A feeling of heaviness
Blood clots require immediate medical attention because they can potentially travel to the lungs and create life-threatening complications.
For this reason, any sudden combination of swelling and pain should never be ignored. Early evaluation can help identify the cause and ensure appropriate treatment.