Deep vein thrombosis (DVT) is a condition in which a blood clot forms in a deep vein, usually in the legs.
This clot can block blood flow, causing pain, swelling, redness, and warmth in the affected area. DVT is serious because the clot can break loose and travel to the lungs, causing a pulmonary embolism (PE), which can be life-threatening.
Risk factors for DVT include prolonged immobility, certain medical conditions, pregnancy, and the use of birth control pills.
Treatment often involves blood thinners or anticoagulants to prevent the clot from growing or breaking apart.