Back in 2008 when the President was still just running for office, he gained a reputation for his messiah like ability to draw large crowds. Beyond that there were the fainting fans. So many incidents of people fainting at then Senator Obama rallies, that he gained a reputation for it.
It was so bad there are even video montages of the events.
Today it would seem is no exception. The fainters are back. http://www.realclearpolitics.com/video/2013/10/21/woman_nearly_faints_behind_obama_as_he_talks_about_obamacare.html From what the story says the woman who fainted has diabetes and is pregnant. One can only hope she is ok.