Hillary Clinton left a service at the 9/11 memorial on Sunday early.
According to a statement from Clinton's campaign spokesperson, Nick Merrill, the candidate felt "overheated," so she went to her daughter's apartment. Clinton is "feeling much better," the statement said.
She is overcoming pneumonia and was diagnosed with it Friday, her doctor said."medical episode."
Video taken at the scene and posted on social media shows Clinton being held up by three people. She staggers and appears to trip on a curb as they help her into a vehicle.
The Associated Press contributed to this story.