Hillary Clinton has a medical history of blood clots (UPDATES)

Secretary of State Hillary Rodham Clinton's recent blood clot was not her first. Clinton, who has been admitted to a New York hospital for a blood clot, also suffered a clot in 1998, the New York Daily News reported.

“That was the most significant health scare I've ever had,” Clinton told the Daily News in 2007. Some questions remain about Clinton's current condition. Physicians are worried about “other issues associated with her concussion” but declined to elaborate to reporters. 

Clinton's spokespeople say that the clot stemmed from a concussion she received after fainting earlier this month. But at least one doctor says that story doesn't add up. 

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Writing in The Daily Beast, Dr. Kent Sepkowitz suggests that he thinks Clinton's health is worse than spokespeople are letting on: "Unlike the relatively bland 'concussion after fainting' pronouncement from earlier this month, this terse press release from her spokesman smells a little fishy," Sepkowitz wrote. "First it is odd that we are not told where the clot is."

He also claims that concussions don't predispose people to blood clots. While Sepkowitz says that he doesn't quite believe The National Enquirer's claim that Clinton has a brain tumor, he writes that "such a story no longer seems to me as implausible as it did after the faint and concussion reports."

However, Dr. Cam Patterson, a professor and chief of cardiology at the University of North Carolina-Chapel Hill, says that clots can be caused after extended bed rest after a concussion.   

Late today, Clinton's doctors released more information about the nature of her blood clot, revealing that it is "a clot in the vein that is situated in the space between the brain and the skull behind the right ear," CNN reported.

The doctors said it did not result in a stroke or neurological damage, and added they were confident that she would make a full recovery, CNN reported.

The doctors said Clinton will be released once the medication dose of blood thinners has been established, CNN reported.