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Blood clots can be deadly, but they are often preventable and treatable
Washington Post

Blood clots — jellylike masses of protein, blood cells and platelets — can be lifesaving when they stop bleeding caused by an injury. But they can be deadly if they form where they aren’t needed.

A clot in a vein close to the skin’s surface causes a burning or itching sensation yet typically doesn’t lead to serious problems. But a clot that develops in a vein deep in the lower abdomen or legs, called a deep-vein thrombosis, or DVT, can interfere with blood flow, often causing swelling and inflammation.

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