A method of healing in which invocations are made to a supernatural power. Appeals are made to God or saints to intervene and cure a patient from his ailment. Faith healing is present across cultures and can be found in the most primitive societies as well as the most modern ones. Prayers play an important role in faith healing and the recipient of the healing procedure has to have faith in the divine power invoked. There are various sites around the world reputed for cases of healing by faith; these sites are usually shrines frequented by pilgrims and the miracles of healing by faith usually take place during fairs held every year. Of course, faith healing is not free of its share of quackery and scandals.