YOUNGSTOWN, Ohio - The health of presidential candidate Hillary Clinton is now being questioned.

She was seen on video collapsing into the arms of staff members after leaving a 9/11 ceremony on Sunday.

Her campaign told the press she left due to heat exhaustion.

After the video was posted, her campaign then said she was diagnosed with pneumonia.

Clinton supporter Congressman Tim Ryan says he believes she doesn't have any debilitating illnesses.

"She's all over the country. She's constantly on airplanes. To get pneumonia after a vigorous campaign doesn't really surprise anybody. When we see her in the debates and see how she is, she's fine," Ryan said

Clinton has been seen having coughing fits throughout her campaign.

She suffered a concussion in 2012.