Her spokesman, Philippe Reines, said Clinton is being treated with anti-coagulants at the New York-Presbyterian Hospital, where she will remain for the next 48 hours in order for doctors to observe her progress.
"Her doctors will continue to assess her condition, including other issues associated with her concussion," Reines said. "They will determine if any further action is required."
When news of Clinton's concussion first broke two weeks ago, many conservatives were quick to question both the diagnosis and its timing, which coincided with Clinton's scheduled testimony about the attacks in Benghazi. Media Matters has a video rundown of the various Fox News pundits who attempted to spread conspiracy theories about the incident, and Buzzfeed has a list of eight people who thought the concussion was faked. There was also a Twitter hashtag game called "#HillaryProverbs," which several conservatives used, as recently as Saturday, to make "jokes" like "A concussion a day keeps congressional investigators at bay."
Clinton had been scheduled to return to work this week.
[Image via AP]