The Catholic Church has established an exorcist hotline in Milan, its biggest diocese, to cope with demand. Monsignor Angelo Mascheroni, the diocese’s chief exorcist since 1995, said the curia had also appointed twice as many exorcists to cope with a doubling in the number of requests for help over 15 years, Belfast Telegraph said.

The Monsignor said he knew of one exorcist who had been seeing up to 120 people a day. “But with so little time per client he was only able to offer a quick blessing. That’s not enough,” he said. ”There should be two to four appointments a day, no more, otherwise it’s too much.”

Monsignor Mascheroni said that part of the increase in the number of suspected possessions might be explained by the rising numbers of parents having difficulty controlling disobedient teenagers. He warned that many worried and vulnerable people were at risk from charlatans.

The Monsignor said that all those who sought help were welcomed. But he added: “The real diabolical phenomena, at least in my experience, are very rare.” He said that “mental phenomena, mental and psychiatric disorders” were often to blame for unusual behaviour.

Not all Catholic exorcists take such a pragmatic approach, however. Father Gabriele Amorth, who was the Vatican’s chief exorcist for 25 years, claims to have dealt with 70,000 cases of demonic possession.

Father Amorth also took a dim view of fantasy novels and yoga. Practicing the latter, he once warned, was “satanic; it leads to evil just like reading Harry Potter”.