Thromboembolism is a medical condition that occurs when a blood clot, known as a thrombus, forms in a blood vessel and then breaks loose, traveling through the bloodstream. This traveling clot, called an embolus, can block blood flow to vital organs, leading to serious complications such as a stroke or pulmonary embolism. The risk factors for thromboembolism include prolonged immobility, certain medical conditions, and lifestyle choices such as smoking. Treatment often involves medications like anticoagulants to prevent further clotting and may include procedures to remove the clot if necessary. Early detection and management are crucial for better outcomes.