Hillary Clinton has been suffering from pneumonia, her doctor has revealed.
News of her illness came shortly after a video emerged of the presidential candidate collapsing at a 9/11 memorial service in New York City on Sunday.
Dr. Lisa Bardack said in a statement,
Secretary Clinton has been experiencing a cough related to allergies. On Friday, during follow-up evaluation of her prolonged cough, she was diagnosed with pneumonia. She was put on antibiotics, and advised to rest and modify her schedule.
Campaign officials have canceled her two-day trip to California, where she was set to make a speech.
Clinton arrived in NYC Sunday morning to pay her respects when, around an hour later, she became "overheated."
Footage filmed by a passerby showed her stumbling on her feet as she waited to get into a car.
Clinton was surrounded by her aides when she appeared to faint and fall toward the vehicle door.
At the time, a spokesperson for Clinton said she was taken to her daughter's nearby apartment in the Flatiron District.
A statement from her campaign read,
Secretary Clinton attended the September 11th Commemoration Ceremony for just an hour and thirty minutes this morning to pay her respects and greet some of the families of the fallen. During the ceremony, she felt overheated so departed to go to her daughter's apartment, and is feeling much better.
Services were held worldwide to mark the 15th anniversary of 9/11.