Hillary Clinton Clinton diagnosed with pneumonia
US Democratic presidential candidate Hillary Clinton has been treated for pneumonia, her doctor says, after she was taken ill at a 9/11 ceremony.
Dr Lisa Bardack said she was diagnosed with pneumonia on Friday and given antibiotics, but had become dehydrated at the New York event.
Video shows her being supported by aides as they put her into her van after she left the ceremony early.
The doctor's statement said she was now re-hydrated and "recovering nicely".
"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," Dr Bardack's statement said.
"She was put on antibiotics, and advised to rest and modify her schedule," it went on.
It is not yet clear whether Mrs Clinton will stick to her hectic campaign schedule, starting with a series of fundraisers in California on Monday and Tuesday.
Her Republican opponents have queried her physical fitness, with the presidential candidate Donald Trump telling supporters last month she "lacks the mental and physical stamina" to serve as president and fight Islamic State militants.
Last month Dr Bardack said she was "in excellent health and fit to serve as president of the United States".
She made a full recovery from surgery she underwent in 2012 for a blood clot, the doctor said.
The Clinton campaign has accused opponents of pushing a "deranged conspiracy about Clinton's health".
Mrs Clinton is 68. Her Republican opponent Donald Trump is 70.
Emerging later on Sunday from her daughter's home in New York, Mrs Clinton had said: "I'm feeling great. It's a beautiful day in New York."
She then left for her home in Chappaqua, New York, and on Sunday evening Dr Bardack issued the health update.
Earlier on Sunday, the Clinton campaign had responded to news of the incident at the ceremony by saying she had "felt overheated".