article_snippet.sent: The condition, which was first reported in 2000, often affects people with no history of mental health problems, LiveScience reports.
article_snippet.sent: Simon Rego, director of psychology training at the Albert Einstein College of Medicine/Montefiore Medical Centre in New York, told LiveScience: 'You see things like this emerge periodically in the literature, where people think people have found a unique syndrome.'
article_snippet.sent: But, Simon Rego, director of psychology training at the Albert Einstein College of Medicine/Montefiore Medical Centre in New York said, it may simply be the result of an underlying mental illness.
article_snippet.sent: The second group includes those people with personality disorders and obsessions with fixed ideas, but who do not have a clear mental illness.
article_snippet.sent: Three types of patient were identified, the first group being those with already underlying mental illness.
article_snippet.sent: And the third type of patient, identified in the study, were those with no history of mental illness, but who experienced a psychotic episode while in the city.
article_snippet.sent: of the 1,200 patients examined, just 42 fell into the third category.
highlights_snippet.sent: Experts first identified the rare condition in 2000, noting seven symptoms .
  