U.S. Democratic presidential contender Hillary Clinton is suffering from pneumonia, her doctor said after the former secretary of state abruptly left a memorial service marking the 15th anniversary of the 9/11 terrorist attacks in New York.
Clinton appeared to stumble as she was assisted into a van and rushed to her daughter's Manhattan apartment.
Clinton's doctor, Lisa Bardak, issued a statement saying the candidate had been diagnosed with pneumonia during an examination on September 9. She added that Clinton had also been suffering from an allergy-related cough.
At the September 11 memorial service, Clinton became dehydrated and overheated, the doctor said. Later in the day, Clinton was examined at her home in Chappaqua, New York, and found to be recovering.
Clinton has been prescribed antibiotics and rest.
The Clinton campaign said the candidate had canceled a planned trip to California that was to have taken place on September 12-13.
Clinton, 68, was among many officials, including President Barack Obama, who attended the September 11 ceremonies at the Ground Zero memorial in New York City, where the World Trade Center's two towers were brought down 15 years ago.
The former secretary of state left after about 90 minutes, and a video shot by a bystander showed her appearing to stumble as staff members helped her into a waiting van.
Supporters of Clinton's Republican opponent, Donald Trump, have tried to make the case that she's physically unfit for the White House, citing a concussion she sustained in December 2012 after fainting. Her doctor attributed that episode to a stomach virus and dehydration.
Clinton has dismissed the health allegations as rumor-mongering and the product of baseless conspiracy theories.
Trump also attended the Ground Zero commemorations.