Here.
Flashback here to the New York Times January 2, 2013:
Hillary Rodham Clinton, whose globe-trotting tour as secretary of state was abruptly halted last month by a series of health problems, was discharged from a New York hospital on Wednesday evening after several days of treatment for a blood clot in a vein in her head.
Mrs. Clinton, 65, was admitted to NewYork-Presbyterian/Columbia hospital on Sunday after a scan discovered the blood clot. The scan was part of her follow-up care for a concussion she sustained more than two weeks earlier, when she fainted and fell, striking her head. According to the State Department, the fainting was caused by dehydration, brought on by a stomach virus. The concussion was diagnosed on Dec. 13, though the fall had occurred earlier that week.
The clot was potentially serious, blocking a vein that drains blood from the brain. Untreated, such blockages can lead to brain hemorrhages or strokes. Treatment consists mainly of blood thinners to keep the clot from enlarging and to prevent more clots from forming, and plenty of fluids to prevent dehydration, which is a major risk factor for blood clots. ...
Dr. David J. Langer, a brain surgeon and associate professor at Hofstra North Shore-LIJ School of Medicine, said that Mrs. Clinton would need close monitoring in the next days, weeks and months to make sure her doses of blood thinners are correct and that the clot is not growing. Dr. Langer is not involved in her care. ...
The fact that Mrs. Clinton had a blood clot in the past — in her leg, in 1998 — suggests that she may have a tendency to form clots, and may need blood-thinners long-term or even for the rest of her life, Dr. Manley said. ...