Hillary Clinton was released from New York-Presbyterian Hospital last night after treatment for a blood clot that was discovered in her head. Clinton, 65, had not been seen publicly since December 7th; at some point during that month—it's still unclear when—she suffered a concussion after falling down during a bout with a stomach virus. The Times reports that a follow-up MRI revealed a blood clot "in a vein that runs through the space between the brain and the skull behind the right ear." The condition is potentially fatal if not caught in time.

Clinton had been in the hospital since Sunday. A day later doctors determined there was no neurological damage, but she was kept under observation for two more days while the proper blood thinner dosage was determined. During her stay, she was in touch with her staff in Washington, and a State Department spokesperson says she was "quite active on the phone with all of us." Another spokesperson says, "She's eager to get back to the office."

Clinton's illness and concussion last month forced her to cancel her appearance before Congress to testify about the attack on the U.S. diplomatic mission in Benghazi, Libya. There was widespread speculation that Clinton had faked the illness in order to avoid testifying. Now the NY Post portends that Clinton's condition could cause "a stroke that could impair the neurological functions of the globe-trotting top diplomat, who is stepping down from office amid speculation that she will run for president in 2016." And oncologist Dr. Marc Straus tells the tabloid, “It’s a little bit odd that there would be a routine MRI unless she had symptoms. I suspect something led them to do the tests that we don’t know about.”