Hillary Clinton to release medical details after keeping pneumonia from most of her campaign team

Hillary Clinton will release more medical information over the next few days to counter doubts about her health as it emerged she hid her pneumonia diagnosis from most of her campaign staff.

The Democratic presidential candidate also admitted she ignored her doctor's advice to rest for five days, telling CNN: "I just didn't think it was going to be that big a deal."

Husband Bill Clinton, meanwhile, revealed his wife has had several similar health episodes "over many, many years" because of severe dehydration but sought to play down the latest incident.

"She's worked like a demon," Mr Clinton told Charlie Rose on US channel PBS. "Today she made a decision, which I think was correct, to cancel her campaign day to take one more day to rest."

He added: "She looked like a million bucks this morning, I can tell she's feeling a lot better."

Asked if it was possible she might miss weeks of campaigning, he said: "No, not a shot."

The candidate's team initially attributed her early exit from Sunday's 9/11 memorial service in New York to "overheating" after she was seen collapsing while being shuttled away from the venue.

A subsequent statement from Mrs Clinton's doctor confirmed the 68-year-old was recovering after being diagnosed with the lung infection.

Mrs Clinton said she would be back on the campaign trail in a couple of days as she addressed her apparent fainting episode.

She said that she felt dizzy and "did lose my balance" while she waited for the motorcade at the memorial event, but felt better as soon as she entered the air-conditioned vehicle.

The former US secretary of state said she is feeling "so much better" and was "anxious" to get back campaigning with the election less than 60 days away.

Mrs Clinton's rival in the race for the White House, Donald Trump, wished her a speedy recovery, but insisted that "something's going on with her health".

The Republican candidate, who has consistently raised questions about Mrs Clinton's health, said he would be releasing detailed medical information about himself "soon".

Mrs Clinton had been warned to rest by her doctor last Friday having sought advice about the harsh cough she had battled with through a week of campaigning.

She tweeted a message to her supporters on Sunday confirming she was "feeling fine and getting better" and would be back campaigning "soon".