Blood clots in the foot, ankle, calf or thigh may present with some or all of the following symptoms: pain, warmth, inflammation and either a reddish or bluish discoloration, explains Clot Connect. These four sites for a clot all comprise deep vein thrombosis.
Deep vein thrombosis, or DVT, happens when one of the deep veins in the body, generally in the legs, develops a clot, or thrombus, according to Mayo Clinic. While the symptoms listed above are all common, some clots happen without any symptoms at all. People who are sedentary for a long period of time, such as after an injury or operation or during confinement to a bed in a nursing home or hospital, are at risk of deep vein thrombosis; so are people who have a condition influencing the ways in which the blood clots.
Deep vein thrombosis requires medical attention because clotting in the feet or legs, or anywhere else in the body, has the potential to break free, go through the bloodstream and end up in the lungs, keeping blood from flowing in and causing pulmonary embolism, reports Mayo Clinic. Pulmonary embolism symptoms include shortness of breath, unexplained acceleration in heart rate, a cough that sometimes includes blood and chest pain that sometimes gets worse when the patient breathes deeply, notes Clot Connect.