Exorcism
In Catholic Christianity, exorcisms are performed in the name of Jesus Christ. A distinction is made between a formal exorcism, which can only be conducted by a priest during a baptism or with the permission of a bishop, and "prayers of deliverance" which can be said by anyone.
The Catholic rite for a formal exorcism, called a "Major Exorcism", is given in Section 11 of the Rituale Romanum. The Ritual lists guidelines for conducting an exorcism, and for determining when a formal exorcism is required. Priests are instructed to carefully determine that the nature of the affliction is not actually a psychological or physical illness before proceeding.
Gabriele Amorth
He said that the new rite of Exorcism is "a farce. An incredible obstacle that is likely to prevent us from acting against the demon." He observes that the new exorcism rite forbids exorcisms on people who have been reportedly subjected to evil spells. Father Amorth exclaimed, "Absurd! Evil spells are by far the most frequent causes of possessions and evil procured through the demon: at least 90% of cases. It is as good as telling exorcists they can no longer perform exorcisms." He also noted that it also "Solemnly declares that one should not carry out exorcisms if one is not certain of the presence of the devil", while "it is only through exorcism that the demons reveal themselves". He considers the new rite, "A blunt weapon ... Efficacious prayers, prayers that had been in existence for twelve centuries, were suppressed and replaced by new ineffective prayers."