choco, maybe the person has been visited by ghosts and spirits, and they made him crazy, who knows? ha! OK, this time you're not that off .. this case is most likely mental illness.
I know a sorcerer in Lahore. Very very good at what he does. He's a also a believer, Muslim, strangely enough. He does exorcisms too.
(I kinda get the feeling that kuspaar is a character who's taking the thread for a ride...anyway)