(MICHAL CIZEK/AFP/Getty Images)

Secretary of State Hillary Clinton suffered a concussion earlier this week after she hit her head when she fainted because of dehydration from a stomach virus, a Clinton aide said today in a statement.

"She has been recovering at home and will continue to be monitored regularly by her doctors," Deputy Assistant Secretary Philippe Reines said. "At their recommendation, she will continue to work from home next week, staying in regular contact with Department and other officials. She is looking forward to being back in the office soon."

No ambulance was called and she was not hospitalized, according to a state department official.

Clinton was supposed to travel to North Africa last week and then to the United Arab Emirates at the beginning of the week, but cancelled her trip due to illness.

She was expected to testify before Congress on Thursday at hearings on the attack on the U.S. consulate in Benghazi, Libya. The Associated Press reported that her appearance has now been cancelled.

The State Department has not released further details on Clinton's injury.