What is a blood clot?
A blood clot itself may not be something that you directly feel. However, the signs and symptoms of blood clots vary depending on their location.
Normally, blood clotting is a natural mechanism of the body that prevents excessive blood loss when a blood vessel is injured. Platelets, proteins, and blood cells in the blood aggregate together to form the blood clot.
However, clots that form inside the vessels without an obvious injury are not normal and may be dangerous. Blood clots are semi-solid masses of blood that may be immobile (thrombosis) and impede blood flow or dislodge to other parts of the body (embolism). Abnormal clots can be formed in arteries or veins. Depending on their location, this can result in tissue damage (clot in an artery) or pain and swelling (clot in a vein). Deep vein thrombosis is a clot in a major vein of the extremities, pelvis, and other areas. Deep vein clots, if dislodged, can travel through veins through the lungs to the arteries in the lungs. This is referred to as a pulmonary embolism and can be deadly. Blood clots can also lead to a heart attack or stroke.