Blood clot: Learn about blood clots

Learn about blood clots, which can form in arteries or veins and block blood flow to vital organs. Find out the signs, causes, and risks of blood clots and how to prevent them. Blood clots can occur without any noticeable symptoms, but when symptoms do appear, they vary depending on the location of the clot, such as in the arm, leg, lungs, heart, or brain. Symptoms... A blood clot is a gel-like mass formed by platelets and fibrin in the blood to stop bleeding. Learn the types, causes, symptoms, diagnosis, treatment, complications, and prevention of blood clots. Learn how to recognize the warning signs of blood clots in your legs, lungs and other parts of your body. Find out what to do if you suspect a blood clot and how to prevent them.