Noun
Jerusalem syndrome (uncountable)
A group of mental phenomena involving religious delusion or obsession relating to the city of Jerusalem.
Jerusalem Syndrome is actually a rare psychological condition that occurs to some visitors to the Middle East. They get to Israel and just snap. Marc Maron
Some have had breakdowns, and Jerusalem syndrome, a condition involving delusions, obsessive ideas and psychosis that requires hospitalization, is covered in medical texts. Source: Internet