Hillary Clinton 's blood clot is called a cerebral vein thrombosis and is relatively rare . Anyone who has had a blood clot in the past is at a higher risk of getting one again . Comment:
Hillary Clinton 's blood clot is called a cerebral vein thrombosis and is relatively rare . Anyone who has had a blood clot in the past is at a higher risk of getting one again . It 's unknown if Clinton has a genetic condition that may increase her risk .