Their blood is more likely to coagulate, or clot. There are also some people who have blood that has an abnormal tendency to coagulate. Incidence Blood clots with associated embolisms affect millions of Americans every year. About half a million of these incidents are considered serious enough to be dangerous. Blood clots are more common among people with diabetes or any form of heart disease, including endocarditis , heart failure, or a problem with blood circulation.
Clots are more likely to occur in people who are older or overweight.
All smokers, especially women who smoke and also take birth control pills, are at risk. Symptoms you are likely to notice An embolism in an arm or leg may cause you to feel pain or tingling in the limb. If it is not treated, the limb may become weak or numb and turn blue from lack of oxygen. A clot in a deep vein in the leg will cause the leg to become very painful and swollen. See your physician for these symptoms.