http://www.answering-islam.org/authors/thompson/demonic_influence.html
In this article I seek to survey early Islamic source material pertaining to Muhammad’s demon possession and then compare those details with what the Bible says about demon possession. The Bible has much to say about being influenced by evil spirits, demons or Satan and it is the most relevant text in this regard with which to compare Muhammad’s condition as found in the Quran, Hadith and other Islamic sources. After much study I have come to realize that Muhammad, the false prophet of Islam, perfectly fits the Biblical description of someone under demonic oppression, demon possession or the influence of Satan.